Colour

#83131A

#83131A
Red
Dark
Nearest: Brown

#83131A is a red with RGB values 131, 19, 26 and HSL 356°, 75%, 29%. It is a dark colour, so white text on it reaches 10.1:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#83131A#83131A

HEX#83131A

RGBrgb(131, 19, 26)

RGB (0–1)0.5137, 0.0745, 0.102

RGB percentages51.4%, 7.5%, 10.2%

HSLhsl(356.3, 74.7%, 29.4%)

HSV / HSBhsv(356.3, 85.5%, 51.4%)

CMYK0%, 85.5%, 80.2%, 48.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer8,590,106

CSS custom property--colour: #83131A;

Brightness & contrast

Relative luminance0.05366WCAG 2.x, 0 is black and 1 is white

Perceived brightness73.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 10.13:1

Contrast with white10.13:1WCAG normal text: AAA

Contrast with black2.07:1WCAG normal text: Fail

Greyscale equivalent#2B2B2B

Inverted#7CECE5

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#383219no red cones; affects about 1% of men; ΔE 48.9 from the original

Deuteranopia#534A15no green cones; the most common form, about 1% of men; ΔE 49.2 from the original

Tritanopia#910017no blue cones; rare, and affects men and women equally; ΔE 8.9 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text10.13:1WCAG large text: AAA

Contrast with black, large text2.07:1WCAG large text: Fail

Named colours

Brown · ΔE 11 Maroon · ΔE 11 Dark red · ΔE 14.8 Firebrick · ΔE 18.3 Sienna · ΔE 24.3 Saddle brown · ΔE 25.4

Nearest named CSS colourBrown (#A52A2A)ΔE 10.98, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#13837C

Analogous#831352, #834413

Triadic#1A8313, #131A83

Split complementary#138344, #135283

Tetradic#528313, #13837C, #441383

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#EB777E

Lighter +30%#E54A54

Lighter +20%#DC202C

Lighter +10%#B01923

Darker −10%#560D11

Darker −20%#2A0608

Darker −30%#000000

Darker −40%#000000

More saturated +25%#96000A

Less saturated −25%#70262A

Channel breakdown

R131

G19

B26

Red131 (51.4%)

Green19 (7.5%)

Blue26 (10.2%)

Hue356.25°

Saturation (HSL)74.67%

Lightness29.41%

Dominant channelRed

Hex per channelR 83 · G 13 · B 1A

Keep nerding

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#83131A

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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