Recognised as Colour

#831C09

#831C09
Red
Dark
Nearest: Maroon

#831C09 is a red with RGB values 131, 28, 9 and HSL 9°, 87%, 27%. It is a dark colour, so white text on it reaches 9.8:1 contrast (AAA for normal text). The nearest named colour is Maroon.

Colour values

#831C09#831C09

HEX#831C09

RGBrgb(131, 28, 9)

RGB (0–1)0.5137, 0.1098, 0.0353

RGB percentages51.4%, 11%, 3.5%

HSLhsl(9.3, 87.1%, 27.5%)

HSV / HSBhsv(9.3, 93.1%, 51.4%)

CMYK0%, 78.6%, 93.1%, 48.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer8,592,393

CSS custom property--colour: #831C09;

Brightness & contrast

Relative luminance0.05676WCAG 2.x, 0 is black and 1 is white

Perceived brightness74.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 9.84:1

Contrast with white9.84:1WCAG normal text: AAA

Contrast with black2.14:1WCAG normal text: Fail

Greyscale equivalent#313131

Inverted#7CE3F6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#3D3505no red cones; affects about 1% of men; ΔE 46.2 from the original

Deuteranopia#564C02no green cones; the most common form, about 1% of men; ΔE 46.5 from the original

Tritanopia#910019no blue cones; rare, and affects men and women equally; ΔE 12.3 from the original

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

Contrast with white, large text9.84:1WCAG large text: AAA

Contrast with black, large text2.14:1WCAG large text: Fail

Named colours

Maroon · ΔE 6.4 Dark red · ΔE 9.4 Brown · ΔE 13.3 Firebrick · ΔE 17.1 Saddle brown · ΔE 18.7 Sienna · ΔE 20.2

Nearest named CSS colourMaroon (#800000)ΔE 6.37, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#097083

Analogous#830933, #835909

Triadic#09831C, #1C0983

Split complementary#098359, #093383

Tetradic#338309, #097083, #590983

Tints, shades & saturation

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

Lighter +40%#F47A64

Lighter +30%#F15134

Lighter +20%#E23010

Lighter +10%#B3260C

Darker −10%#531206

Darker −20%#240802

Darker −30%#000000

Darker −40%#000000

More saturated +25%#8C1600

Less saturated −25%#72281A

Channel breakdown

R131

G28

Red131 (51.4%)

Green28 (11%)

Blue9 (3.5%)

Hue9.34°

Saturation (HSL)87.14%

Lightness27.45%

Dominant channelRed

Hex per channelR 83 · G 1C · B 09

Keep nerding

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#831C09

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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