Colour

#81000A

#81000A
Red
Dark
Nearest: Maroon

#81000A is a red with RGB values 129, 0, 10 and HSL 355°, 100%, 25%. It is a dark colour, so white text on it reaches 10.8:1 contrast (AAA for normal text). The nearest named colour is Maroon.

Colour values

#81000A#81000A

HEX#81000A

RGBrgb(129, 0, 10)

RGB (0–1)0.5059, 0, 0.0392

RGB percentages50.6%, 0%, 3.9%

HSLhsl(355.3, 100%, 25.3%)

HSV / HSBhsv(355.3, 100%, 50.6%)

CMYK0%, 100%, 92.2%, 49.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer8,454,154

CSS custom property--colour: #81000A;

Brightness & contrast

Relative luminance0.04689WCAG 2.x, 0 is black and 1 is white

Perceived brightness70.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 10.84:1

Contrast with white10.84:1WCAG normal text: AAA

Contrast with black1.94:1WCAG normal text: Fail

Greyscale equivalent#1C1C1C

Inverted#7EFFF5

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#332C08no red cones; affects about 1% of men; ΔE 52.3 from the original

Deuteranopia#504601no green cones; the most common form, about 1% of men; ΔE 52 from the original

Tritanopia#8F0006no blue cones; rare, and affects men and women equally; ΔE 7.5 from the original

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

Contrast with white, large text10.84:1WCAG large text: AAA

Contrast with black, large text1.94:1WCAG large text: Fail

Named colours

Maroon · ΔE 3.8 Dark red · ΔE 7.7 Brown · ΔE 12.4 Firebrick · ΔE 15.6 Saddle brown · ΔE 25.8 Sienna · ΔE 26.3

Nearest named CSS colourMaroon (#800000)ΔE 3.75, a close match

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#008177

Analogous#81004B, #813600

Triadic#0A8100, #000A81

Split complementary#008136, #004B81

Tetradic#4B8100, #008177, #360081

Tints, shades & saturation

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

Lighter +40%#FF4E5C

Lighter +30%#FF1B2D

Lighter +20%#E70012

Lighter +10%#B4000E

Darker −10%#4E0006

Darker −20%#1B0002

Darker −30%#000000

Darker −40%#000000

More saturated +25%#81000A

Less saturated −25%#711018

Channel breakdown

R129

B10

Red129 (50.6%)

Green0 (0%)

Blue10 (3.9%)

Hue355.35°

Saturation (HSL)100%

Lightness25.29%

Dominant channelRed

Hex per channelR 81 · G 00 · B 0A

Keep nerding

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#81000A

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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