Encycolorpedia

Dutch Boy Grizzly Brown / #646055 hexadecimale kleurcode

#646055 Paint ChipDe hexadecimale kleurcode #646055 is een medium donkere tint van geel. In het RGB-kleurmodel bestaat #646055 uit 39.22% rood, 37.65% groen en 33.33% blauw. In de HSL-kleurruimte heeft #646055 een tint van 44° (graden), 8% verzadiging en 36% lichtheid. Deze kleur heeft een geschatte golflengte van 574.95 nm.

Kleurvariaties

Kleuren bij naam

Kleurenschema's

Download: GIMP GPL Adobe ASE (Adobe Swatch Exchange) Sketch Palette

Monochromatische kleuren

  1. #534f44
  2. #58554a
  3. #5e5a4f
  4. #646055
  5. #6a665b
  6. #706c60
  7. #767266

Kleurtinten

#646055 naar wit

  1. #646055
  2. #7c786f
  3. #95928a
  4. #aeaca6
  5. #c9c7c3
  6. #e4e3e1
  7. #ffffff / #fff

#646055 naar zwart

  1. #646055
  2. #535047
  3. #434039
  4. #33312c
  5. #242320
  6. #161513
  7. #000000 / #000

Verfkleuren

Bijpassende verf

Vergelijkbare verf

  1. Ralph Lauren

    1. ★ Master Room / RLVM2107
      #636055
      ΔE = 0.406 / LRV ≈ 11.7%
    2. Acacia Green / RLNA240
      #5b564a
      ΔE = 4.151 / LRV ≈ 9.4%
  2. Sigma

    1. ★ Yellow Ocre / S 7005-Y20R
      #636056
      ΔE = 0.597 / LRV ≈ 11.7%
    2. Natural Green / 7010
      #5f665f
      ΔE = 4.990 / LRV ≈ 12.8%
  3. Resene

    1. ★ Triple Friar Grey Y51-013-084
      #666156
      ΔE = 0.638 / LRV ≈ 12.0%
    2. Triple Pravda BR50-019-076
      #675c4c
      ΔE = 3.749 / LRV ≈ 11.1%
  4. Pantone / PMS

    1. ★ P 170-12 C
      #666157
      ΔE = 0.826 / LRV ≈ 12.1%
    2. P 179-13 U
      #63605c
      ΔE = 3.281 / LRV ≈ 11.8%
  5. Dupont

    1. ★ CAS838
      #615f55
      ΔE = 1.059 / LRV ≈ 11.4%
    2. CAS806
      #675d57
      ΔE = 3.563 / LRV ≈ 11.4%
  6. Federal Standard

    1. ★ Federal Standard 34086
      #615f56
      ΔE = 1.301 / LRV ≈ 11.4%
    2. Federal Standard 34083
      #5d5d50
      ΔE = 2.494 / LRV ≈ 10.7%
  7. Brillux

    1. ★ 03.03.25
      #646058
      ΔE = 1.403 / LRV ≈ 11.8%
    2. 93.06.30
      #696756
      ΔE = 3.789 / LRV ≈ 13.4%
  8. Caparol

    1. ★ 33S 2 / Str-Putz Ox.schw.33S 2
      #646058
      ΔE = 1.403 / LRV ≈ 11.8%
    2. ★ 50 5 80 / Palazzo 75
      #68645c
      ΔE = 2.235 / LRV ≈ 12.8%
  9. Valspar Paint

    1. ★ In the Nick R84F
      #605d53
      ΔE = 1.425 / LRV ≈ 10.9%
    2. Muted Ebony
      #676461
      ΔE = 4.166 / LRV ≈ 12.9%
  10. ICI Paints

    1. ★ 4426 Old Bark 70YY 14/076
      #646153
      ΔE = 1.467 / LRV ≈ 11.9%
    2. Palm Court 90YY 12/084
      #595749
      ΔE = 4.348 / LRV ≈ 9.4%
  11. Diamond Vogel

    1. ★ Ares Shadow / 0207
      #675f53
      ΔE = 1.625 / LRV ≈ 11.7%
    2. ★ Evening Dove / 0451
      #5e5c4f
      ΔE = 2.274 / LRV ≈ 10.6%
  12. Glidden

    1. ★ Wild Truffle / 30YY 11/076
      #655d52
      ΔE = 1.814 / LRV ≈ 11.2%
    2. Lemur / PPG1101-7
      #695f4f
      ΔE = 3.248 / LRV ≈ 11.8%
  13. Magnolia Home

    1. ★ Rocking Horse / JG-121
      #625d55
      ΔE = 1.819 / LRV ≈ 11.1%
    2. Wellington Green / JG-66
      #676b5e
      ΔE = 4.945 / LRV ≈ 14.2%
  14. Porter Paints

    1. ★ Plunge Pool / ATC-55
      #666457
      ΔE = 1.861 / LRV ≈ 12.6%
    2. Introspective / ATC-85
      #6d5f53
      ΔE = 3.942 / LRV ≈ 12.1%
  15. Clark+Kensington

    1. ★ Spanish Eyes / 2044
      #686153
      ΔE = 1.873 / LRV ≈ 12.1%
    2. Carriage Hill / 2024
      #5c6355
      ΔE = 4.483 / LRV ≈ 11.9%
  16. Earthpaint

    1. ★ 5-15-6 Smooth Grey
      #69645a
      ΔE = 1.874 / LRV ≈ 12.9%
    2. 5-12-6 Dry Bamboo
      #6d6355
      ΔE = 3.144 / LRV ≈ 12.8%
  17. Zoffany

    1. ★ City Grey
      #665e51
      ΔE = 1.875 / LRV ≈ 11.4%
  18. Dulux Australia

    1. ★ Tuxedo / I18
      #66635b
      ΔE = 1.894 / LRV ≈ 12.5%
    2. Bronze Fig / A215
      #6e6554
      ΔE = 4.030 / LRV ≈ 13.3%
  19. Natural Color System / NCS

    1. ★ S 6005-G80Y
      #655e50
      ΔE = 1.911 / LRV ≈ 11.4%
    2. S 6502-Y
      #5a544d
      ΔE = 5.139 / LRV ≈ 9.1%
  20. Ford

    1. ★ Medium Cypress Green
      #635f50
      ΔE = 1.931 / LRV ≈ 11.4%
    2. Deep Sandlewood
      #5f5a4f
      ΔE = 2.430 / LRV ≈ 10.3%
  21. Benjamin Moore

    1. ★ Mohegan Sage / 2138-30
      #605f51
      ΔE = 2.006 / LRV ≈ 11.3%
    2. Dark Olive / 2140-30
      #626354
      ΔE = 2.785 / LRV ≈ 12.2%
  22. Saab

    1. ★ Citygrau / GY2
      #605d4f
      ΔE = 2.047 / LRV ≈ 10.9%
  23. Martha Stewart Living

    1. ★ Peat F05
      #5e5c50
      ΔE = 2.090 / LRV ≈ 10.6%
    2. Mesquite F06
      #665e4e
      ΔE = 2.834 / LRV ≈ 11.4%
  24. Asian Paints

    1. ★ Stone Creek / 8461
      #676051
      ΔE = 2.161 / LRV ≈ 11.8%
    2. Golden Point / 9510
      #746a5d
      ΔE = 5.163 / LRV ≈ 14.8%
  25. Behr

    1. ★ Night Mission N370-7
      #5e5b51
      ΔE = 2.207 / LRV ≈ 10.5%
    2. Underground N200-7
      #665a52
      ΔE = 3.935 / LRV ≈ 10.7%
  26. Colortrend

    1. ★ 0424
      #616051
      ΔE = 2.250 / LRV ≈ 11.5%
    2. Sturgis Gray
      #57554f
      ΔE = 5.194 / LRV ≈ 9.1%
  27. General Paint

    1. ★ Meteorite / CLV 1135N
      #645c53
      ΔE = 2.265 / LRV ≈ 11.0%
    2. Barbaric / CL 2856N
      #6e6253
      ΔE = 3.830 / LRV ≈ 12.7%
  28. Dunn-Edwards

    1. English Forest / 297
      #606256
      ΔE = 2.429 / LRV ≈ 11.9%
    2. Black Forest / 280
      #5e6354
      ΔE = 3.972 / LRV ≈ 11.9%
  29. Devoe Paint

    1. Burrwood / 30YY 11/076
      #655c4f
      ΔE = 2.498 / LRV ≈ 11.0%
    2. Midnite Hour / 50YR 13/032
      #6d655e
      ΔE = 3.606 / LRV ≈ 13.4%
  30. Cloverdale Paint

    1. Pilot Rock / 8437
      #675d51
      ΔE = 2.501 / LRV ≈ 11.3%
    2. Stone Wall / 8461
      #6d6355
      ΔE = 3.144 / LRV ≈ 12.8%
  31. GM / General Motors

    1. Brookwood Beige
      #685e51
      ΔE = 2.524 / LRV ≈ 11.5%
    2. Sumist Gray
      #59584d
      ΔE = 3.787 / LRV ≈ 9.6%
  32. Duron

    1. Porpoise
      #6b6259
      ΔE = 2.610 / LRV ≈ 12.6%
    2. Cast Iron
      #696b5e
      ΔE = 4.647 / LRV ≈ 14.3%
  33. Coronado Paint

    1. 8326 - Castlemare
      #60615a
      ΔE = 2.674 / LRV ≈ 11.8%
    2. 8461 - Stone Wall
      #615648
      ΔE = 4.757 / LRV ≈ 9.7%
  34. Toyo Ink

    1. CF10819
      #665c53
      ΔE = 2.820 / LRV ≈ 11.1%
    2. CF10849
      #69614c
      ΔE = 4.845 / LRV ≈ 12.1%
  35. AMC

    1. Field Gray
      #64605b
      ΔE = 2.830 / LRV ≈ 11.8%
    2. British Bronze
      #5c574e
      ΔE = 3.729 / LRV ≈ 9.6%
  36. KILZ

    1. Dark Umber / H881
      #5e5d57
      ΔE = 2.885 / LRV ≈ 10.9%
    2. Tea Leaf / F702
      #64604a
      ΔE = 5.063 / LRV ≈ 11.6%
  37. Bristol

    1. Green Grove / P213-N6
      #686555
      ΔE = 2.940 / LRV ≈ 12.9%
    2. Bauxite / P234-N7
      #665e5a
      ΔE = 3.889 / LRV ≈ 11.6%
  38. Range Rover

    1. Atacama Sand Surfacer / 816
      #665f4e
      ΔE = 3.004 / LRV ≈ 11.6%
  39. Levis

    1. Real Grey
      #605d58
      ΔE = 3.029 / LRV ≈ 11.0%
    2. Atl Matin A6
      #616160
      ΔE = 4.827 / LRV ≈ 11.9%
  40. Beckers

    1. Ek 603 / 6807-Y30R
      #5e594c
      ΔE = 3.056 / LRV ≈ 10.0%
    2. Stenblock 582 / S 6005-Y20R
      #6e6b61
      ΔE = 4.478 / LRV ≈ 14.7%
  41. Tollens

    1. T2154-4
      #6b645d
      ΔE = 3.082 / LRV ≈ 13.0%
    2. T2154-2
      #6e5f55
      ΔE = 4.394 / LRV ≈ 12.2%
  42. Brighto Paints

    1. 5-12-7 Africa Safari
      #655e4d
      ΔE = 3.085 / LRV ≈ 11.3%
    2. 5-10-7 Chocolate Fudge
      #625848
      ΔE = 4.421 / LRV ≈ 10.0%
  43. New Look

    1. Zeplin Grey / A04-05
      #62625d
      ΔE = 3.205 / LRV ≈ 12.1%
    2. Trevi / A01-05
      #6d675f
      ΔE = 3.555 / LRV ≈ 13.8%
  44. Wattyl

    1. Colorbond Woodland Grey / A28W
      #62625d
      ΔE = 3.205 / LRV ≈ 12.1%
    2. Sashimi / F61W
      #5b6058
      ΔE = 3.879 / LRV ≈ 11.3%
  45. British Standard

    1. BS 4800 02 A 11 - Grey
      #6a635d
      ΔE = 3.209 / LRV ≈ 12.8%
    2. BS381 285 - NATO green
      #58564a
      ΔE = 4.478 / LRV ≈ 9.2%
  46. Kelly-Moore

    1. Douglas Fir / EC-114
      #5b5c4e
      ΔE = 3.288 / LRV ≈ 10.4%
    2. Olive Grove / KM3976-5
      #695c49
      ΔE = 5.201 / LRV ≈ 11.1%
  47. Taubmans

    1. Oilskin / T12 3.G10
      #6d6254
      ΔE = 3.298 / LRV ≈ 12.6%
    2. Oswego Tea / T10 24L-1
      #695e57
      ΔE = 3.485 / LRV ≈ 11.7%
  48. Australian Standard AS2700

    1. G64 Slate
      #5e6152
      ΔE = 3.334 / LRV ≈ 11.5%
    2. N55 Lead Grey
      #5e5c59
      ΔE = 4.091 / LRV ≈ 10.8%
  49. Dulux

    1. 10YY 14/080
      #6e6256
      ΔE = 3.477 / LRV ≈ 12.7%
    2. 11YY 14/105
      #6d5e4d
      ΔE = 5.064 / LRV ≈ 11.8%
  50. Sherwin-Williams

    1. Eclipse - 6166
      #6b6757
      ΔE = 3.531 / LRV ≈ 13.5%
    2. Cocoon - 6173
      #726b5b
      ΔE = 5.225 / LRV ≈ 14.8%
  51. Pascol

    1. Colorbond® Jasper PO110
      #6e6255
      ΔE = 3.534 / LRV ≈ 12.7%
  52. Scib Paints

    1. Castle Dale / 8438
      #6f675c
      ΔE = 3.579 / LRV ≈ 13.9%
    2. Rock of Ages / 8430
      #6f6a5d
      ΔE = 4.218 / LRV ≈ 14.5%
  53. Nerolac

    1. Moss Bronze - 2679
      #5a5b4d
      ΔE = 3.583 / LRV ≈ 10.2%
    2. Keystone - 2917
      #5f574b
      ΔE = 3.789 / LRV ≈ 9.8%
  54. Vallejo

    1. Vallejo 70.880 #113
      #6a6452
      ΔE = 3.640 / LRV ≈ 12.8%
    2. Vallejo 70.879 #114
      #6d6152
      ΔE = 3.706 / LRV ≈ 12.4%
  55. Flügger

    1. Mørk Beton (U-769)
      #6c6760
      ΔE = 3.648 / LRV ≈ 13.7%
    2. Mørk Granit (U-734)
      #605d5b
      ΔE = 4.394 / LRV ≈ 11.1%
  56. Sico

    1. 6207-73 Storm Belt
      #5c5953
      ΔE = 3.674 / LRV ≈ 10.0%
    2. 6183-73 Purple Martin
      #5f5651
      ΔE = 5.078 / LRV ≈ 9.7%
  57. Volkswagen

    1. Bronze Beige
      #6a625d
      ΔE = 3.677 / LRV ≈ 12.6%
    2. Travertine
      #71695e
      ΔE = 4.322 / LRV ≈ 14.4%
  58. Crown Diamond

    1. 7401-73 Pen and Ink
      #5e574d
      ΔE = 3.677 / LRV ≈ 9.7%
    2. 7401-63 Charcoal Lines
      #726b5f
      ΔE = 4.875 / LRV ≈ 14.9%
  59. Jotun

    1. 2271 / Berg
      #6d635c
      ΔE = 3.680 / LRV ≈ 12.9%
    2. 2523 / Metropol
      #5e5853
      ΔE = 4.234 / LRV ≈ 10.0%
  60. Chrysler

    1. Plymouth Gunmetal
      #5c584a
      ΔE = 3.706 / LRV ≈ 9.7%
    2. Opal Gray
      #696a63
      ΔE = 4.623 / LRV ≈ 14.2%
  61. Renault

    1. Beige / 139
      #6b5e55
      ΔE = 3.722 / LRV ≈ 11.8%
  62. Tikkurila

    1. 4979
      #62605d
      ΔE = 3.767 / LRV ≈ 11.8%
    2. 572X
      #65625f
      ΔE = 3.885 / LRV ≈ 12.3%
  63. CIL

    1. Hawthorne Green
      #5a5f53
      ΔE = 3.776 / LRV ≈ 11.0%
    2. Midnite Hour
      #6b6562
      ΔE = 4.717 / LRV ≈ 13.3%
  64. RAL

    1. RAL 7039 / Quartz grey
      #6c6960
      ΔE = 3.792 / LRV ≈ 14.1%
    2. RAL 1035 / Pearl beige
      #6a5d4d
      ΔE = 4.212 / LRV ≈ 11.4%
  65. Plascon

    1. Dirty Khaki Y3-E1-3
      #6c6858
      ΔE = 3.849 / LRV ≈ 13.8%
    2. Moss Gold Y2-E1-3
      #706858
      ΔE = 4.392 / LRV ≈ 14.1%
  66. Nippon Paint

    1. Serendipitous / NP N 1926 D
      #635e5b
      ΔE = 3.931 / LRV ≈ 11.4%
  67. Olympic

    1. Oswego Tea D32-5
      #655d59
      ΔE = 3.938 / LRV ≈ 11.3%
    2. Granite D17-5
      #73685d
      ΔE = 4.747 / LRV ≈ 14.3%
  68. Dutch Boy

    1. Coffee Roast
      #5f574f
      ΔE = 3.956 / LRV ≈ 9.8%
    2. Quarry Me Gray
      #676360
      ΔE = 4.082 / LRV ≈ 12.7%
  69. Peintures MF

    1. DD410-5
      #606250
      ΔE = 3.990 / LRV ≈ 11.8%
    2. AD170-5
      #635749
      ΔE = 4.632 / LRV ≈ 10.0%
  70. Audi

    1. Dakota Gray Metallic / LY1P, Y7Y7
      #6f695f
      ΔE = 4.001 / LRV ≈ 14.3%
    2. Avocado Green Pearl / LI6S
      #6c6c5d
      ΔE = 5.029 / LRV ≈ 14.7%
  71. Kansai Paint

    1. Charcoal
      #696961
      ΔE = 4.003 / LRV ≈ 14.0%
    2. Expresso
      #736a5d
      ΔE = 4.925 / LRV ≈ 14.7%
  72. Graham & Brown

    1. Mayan Cacao
      #6a6762
      ΔE = 4.082 / LRV ≈ 13.6%
  73. Marston & Langinger

    1. Ash Grey
      #66695c
      ΔE = 4.167 / LRV ≈ 13.7%
  74. Krylon

    1. Castle Rock
      #6f6a60
      ΔE = 4.254 / LRV ≈ 14.5%
  75. Little Greene

    1. Knightsbridge
      #706257
      ΔE = 4.259 / LRV ≈ 12.9%
    2. Stole
      #625954
      ΔE = 4.304 / LRV ≈ 10.4%
  76. Earthborn

    1. Hidey-Hole
      #5d5955
      ΔE = 4.265 / LRV ≈ 10.1%
  77. Sto

    1. 31330
      #6f6554
      ΔE = 4.272 / LRV ≈ 13.3%
    2. 32144
      #6a5a4c
      ΔE = 5.099 / LRV ≈ 10.9%
  78. California Paints

    1. Sturgis Gray
      #595852
      ΔE = 4.277 / LRV ≈ 9.7%
    2. DE 6273 - Green Gate
      #676957
      ΔE = 4.916 / LRV ≈ 13.7%
  79. Model Master

    1. Model Master 1988
      #575951
      ΔE = 4.323 / LRV ≈ 9.8%
  80. Teknos

    1. GBI111
      #696461
      ΔE = 4.366 / LRV ≈ 13.0%
  81. Pratt & Lambert

    1. Wolf 25-20
      #6b6963
      ΔE = 4.384 / LRV ≈ 14.1%
    2. Diplomat Gray 33-21
      #746a5f
      ΔE = 5.167 / LRV ≈ 14.8%
  82. Albany Paint

    1. Raven Grey
      #676763
      ΔE = 4.469 / LRV ≈ 13.5%
  83. Mylands of London

    1. Cactus
      #5a5752
      ΔE = 4.597 / LRV ≈ 9.6%
  84. Fired Earth

    1. Muddy Wellies
      #5e5549
      ΔE = 4.631 / LRV ≈ 9.4%
  85. Rodda Paint

    1. Pointed Fir H97
      #575d55
      ΔE = 4.658 / LRV ≈ 10.5%
    2. Newbury Moss H92
      #606552
      ΔE = 5.143 / LRV ≈ 12.4%
  86. PPG Pittsburgh Paints

    1. Show Me The Money 6953-3
      #6e6552
      ΔE = 4.663 / LRV ≈ 13.2%
    2. Submarine 507-6
      #5d635f
      ΔE = 5.220 / LRV ≈ 12.1%
  87. Humbrol

    1. 224 Dark Slate Grey
      #6a6964
      ΔE = 4.665 / LRV ≈ 14.1%
  88. Vista Paint

    1. Thunder
      #575c56
      ΔE = 4.851 / LRV ≈ 10.4%
    2. Stone Wall
      #615846
      ΔE = 4.904 / LRV ≈ 10.0%
  89. Berger

    1. Fortune Leaves / 8421
      #595847
      ΔE = 4.881 / LRV ≈ 9.6%
    2. Carlton Clay / 8462
      #726959
      ΔE = 4.920 / LRV ≈ 14.4%
  90. Sikkens

    1. C7.03.33
      #6c6562
      ΔE = 4.896 / LRV ≈ 13.4%
    2. C2.04.30
      #68605e
      ΔE = 4.906 / LRV ≈ 12.1%
  91. McCormick Paints

    1. 216 Hearthstone
      #6d6b65
      ΔE = 5.081 / LRV ≈ 14.7%

#646055 HTML & CSS voorbeelden

#646055 voorgrond

Wie zijn hersens niet gebruikt moet zijn benen gebruiken.

<p style="color: #646055">…</p>

#646055 achtergrond

Aan de vruchten kent men den boom.

<p style="background-color: #646055">…</p>

#646055 tekst schaduw

Alle waar is naar zijn geld.

<p style="text-shadow: 0.1em 0.1em 0.15em #646055">…</p>

Kleur samenstelling grafieken

Kleurruimte conversies

Decimaal
6578261
Binair
01100100, 01100000, 01010101
Hexadecimaal
#646055
LRV
≈ 11.7%
Kortste korte hex
#665 ΔE = 3.488
RGB
rgb(100, 96, 85)
RGBA
rgba(100, 96, 85, 1.0)
rg chromaticiteit
r: 0.356, g: 0.342, b: 0.302
RYB
rood: 35.472%, geel: 39.216%, blauw: 33.333%
Android / android.graphics.Color
-10198955 / 0xff646055
HSL
hsl(44, 8%, 36%)
HSLA
hsla(44, 8%, 36%, 1.0)
HSV / HSB
tint: 44° (44.000), verzadiging: 15% (0.150), helderheid: 39% (0.392)
HSP
tint: 44.000, verzadiging: 15.000%, waargenomen helderheid: 37.662%
HSLuv (HUSL)
H: 71.164, S: 19.868, L: 40.785
Cubehelix
H: 42.232, S: 0.098, L: 0.376
TSL
T: 2.163, S: 0.032, L: 0.376
CMYK
cyaan: 0% (0.000), magenta: 4% (0.040), geel: 15% (0.150), key: 61% (0.608)
CMY
cyaan: 61% (0.608), magenta: 62% (0.624), geel: 67% (0.667)
XYZ
X: 11.078, Y: 11.731, Z: 10.273
xyY
x: 0.335, y: 0.355, Y: 11.731
CIELab
L: 40.785, a: -0.529, b: 6.856
CIELuv
L: 40.785, u: 2.944, v: 8.630
CIELCH / LCHab
L: 40.785, C: 6.876, H: 94.409
CIELUV / LCHuv
L: 40.785, C: 9.118, H: 71.164
Hunter-Lab
L: 34.251, a: -2.205, b: 6.192
CIECAM02
J: 30.992, C: 6.447, h: 89.553, Q: 109.682, M: 5.638, s: 22.672, H: 99.270
OSA-UCS
lichtheid: -10.032, geel: 1.003, groene: 0.115
LMS
L: 11.489, M: 12.182, S: 10.296
YCbCr
Y: 98.414, Cb: 122.579, Cr: 130.537
YCoCg
Y: 94.250, Cg: 1.750, Co: 28.750
YDbDr
Y: 95.942, Db: -16.463, Dr: -7.719
YPbPr
Y: 96.060, Pb: -5.960, Pr: 2.506
xvYCC
Y: 98.499, Cb: 122.765, Cr: 130.201
YIQ
Y: 95.942, I: 5.917, Q: -2.577
YUV
Y: 95.942, U: -5.384, V: 3.560
Munsell Kleursysteem
5Y 4/1 ΔE = 0.697
Merkkleur
Deviantart ΔE = 8.327

Willekeurige kleuren

Rood

Groene

Blauw