Recognised as Colour

#831B2E

#831B2E
Red
Dark
Nearest: Brown

#831B2E is a red with RGB values 131, 27, 46 and HSL 349°, 66%, 31%. It is a dark colour, so white text on it reaches 9.7:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#831B2E#831B2E

HEX#831B2E

RGBrgb(131, 27, 46)

RGB (0–1)0.5137, 0.1059, 0.1804

RGB percentages51.4%, 10.6%, 18%

HSLhsl(349, 65.8%, 31%)

HSV / HSBhsv(349, 79.4%, 51.4%)

CMYK0%, 79.4%, 64.9%, 48.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer8,592,174

CSS custom property--colour: #831B2E;

Brightness & contrast

Relative luminance0.05806WCAG 2.x, 0 is black and 1 is white

Perceived brightness76.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 9.72:1

Contrast with white9.72:1WCAG normal text: AAA

Contrast with black2.16:1WCAG normal text: Fail

Greyscale equivalent#323232

Inverted#7CE4D1

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#39362Eno red cones; affects about 1% of men; ΔE 46.3 from the original

Deuteranopia#534C2Bno green cones; the most common form, about 1% of men; ΔE 47.1 from the original

Tritanopia#900023no blue cones; rare, and affects men and women equally; ΔE 12.4 from the original

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

Contrast with white, large text9.72:1WCAG large text: AAA

Contrast with black, large text2.16:1WCAG large text: Fail

Named colours

Brown · ΔE 17.8 Maroon · ΔE 22.7 Indian red · ΔE 25.2 Dark red · ΔE 26.2 Firebrick · ΔE 26.6 Sienna · ΔE 28.9

Nearest named CSS colourBrown (#A52A2A)ΔE 17.76, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1B8370

Analogous#831B62, #833C1B

Triadic#2E831B, #1B2E83

Split complementary#1B833C, #1B6283

Tetradic#62831B, #1B8370, #3C1B83

Tints, shades & saturation

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

Lighter +40%#E68496

Lighter +30%#DD5A72

Lighter +20%#D4304E

Lighter +10%#AD243D

Darker −10%#59121F

Darker −20%#2E0A10

Darker −30%#040101

Darker −40%#000000

More saturated +25%#970721

Less saturated −25%#6F2F3B

Channel breakdown

R131

G27

B46

Red131 (51.4%)

Green27 (10.6%)

Blue46 (18%)

Hue349.04°

Saturation (HSL)65.82%

Lightness30.98%

Dominant channelRed

Hex per channelR 83 · G 1B · B 2E

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#831B2E

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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