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Recognised as Colour

#37232B

  • #37232B
  • Red
  • Dark
  • Nearest: Black

#37232B is a red with RGB values 55, 35, 43 and HSL 336°, 22%, 18%. It is a dark colour, so white text on it reaches 14.6:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#37232B#37232B
HEX#37232B
RGBrgb(55, 35, 43)
RGB (0–1)0.2157, 0.1373, 0.1686
RGB percentages21.6%, 13.7%, 16.9%
HSLhsl(336, 22.2%, 17.6%)
HSV / HSBhsv(336, 36.4%, 21.6%)
CMYK0%, 36.4%, 21.8%, 78.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,613,483
CSS custom property--colour: #37232B;

Brightness & contrast

Relative luminance0.02189WCAG 2.x, 0 is black and 1 is white
Perceived brightness42.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.61:1
Contrast with white14.61:1WCAG normal text: AAA
Contrast with black1.44:1WCAG normal text: Fail
Greyscale equivalent#282828
Inverted#C8DCD4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#25272Bno red cones; affects about 1% of men; ΔE 11 from the original
Deuteranopia#2A2A2Bno green cones; the most common form, about 1% of men; ΔE 10.8 from the original
Tritanopia#3A2226no blue cones; rare, and affects men and women equally; ΔE 3.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.61:1WCAG large text: AAA
Contrast with black, large text1.44:1WCAG large text: Fail

Named colours

Black · ΔE 19.9Dark slate grey · ΔE 27.2Dim grey · ΔE 30.1Gray · ΔE 38.8Slate grey · ΔE 39.8Light slate grey · ΔE 42.8
Nearest named CSS colourBlack (#000000)ΔE 19.86, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#23372F
Analogous#372335, #372523
Triadic#2B3723, #232B37
Split complementary#233725, #233537
Tetradic#353723, #23372F, #252337

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#AB7B8E
Lighter +30%#945F74
Lighter +20%#754B5C
Lighter +10%#563743
Darker −10%#180F13
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#421829
Less saturated −25%#2D2D2D

Channel breakdown

R55
G35
B43
Red55 (21.6%)
Green35 (13.7%)
Blue43 (16.9%)
Hue336°
Saturation (HSL)22.22%
Lightness17.65%
Dominant channelRed
Hex per channelR 37 · G 23 · B 2B

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Every value on this page was computed from “37232b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.