Colour

#63111D

#63111D
Red
Dark
Nearest: Maroon

#63111D is a red with RGB values 99, 17, 29 and HSL 351°, 71%, 23%. It is a dark colour, so white text on it reaches 12.9:1 contrast (AAA for normal text). The nearest named colour is Maroon.

Colour values

#63111D#63111D

HEX#63111D

RGBrgb(99, 17, 29)

RGB (0–1)0.3882, 0.0667, 0.1137

RGB percentages38.8%, 6.7%, 11.4%

HSLhsl(351.2, 70.7%, 22.7%)

HSV / HSBhsv(351.2, 82.8%, 38.8%)

CMYK0%, 82.8%, 70.7%, 61.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,492,445

CSS custom property--colour: #63111D;

Brightness & contrast

Relative luminance0.03142WCAG 2.x, 0 is black and 1 is white

Perceived brightness56.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 12.9:1

Contrast with white12.9:1WCAG normal text: AAA

Contrast with black1.63:1WCAG normal text: Fail

Greyscale equivalent#232323

Inverted#9CEEE2

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#29271Dno red cones; affects about 1% of men; ΔE 38.9 from the original

Deuteranopia#3E381Bno green cones; the most common form, about 1% of men; ΔE 38.8 from the original

Tritanopia#6D0016no blue cones; rare, and affects men and women equally; ΔE 9.3 from the original

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

Contrast with white, large text12.9:1WCAG large text: AAA

Contrast with black, large text1.63:1WCAG large text: Fail

Named colours

Maroon · ΔE 25.9 Brown · ΔE 26.3 Dark red · ΔE 30.6 Sienna · ΔE 31.6 Saddle brown · ΔE 32.2 Indian red · ΔE 34.5

Nearest named CSS colourMaroon (#800000)ΔE 25.92, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#116357

Analogous#631146, #632E11

Triadic#1D6311, #111D63

Split complementary#11632E, #114663

Tetradic#466311, #116357, #2E1163

Tints, shades & saturation

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

Lighter +40%#E35D70

Lighter +30%#DC314A

Lighter +20%#BA2036

Lighter +10%#8F182A

Darker −10%#370A10

Darker −20%#0C0203

Darker −30%#000000

Darker −40%#000000

More saturated +25%#720213

Less saturated −25%#551F27

Channel breakdown

R99

G17

B29

Red99 (38.8%)

Green17 (6.7%)

Blue29 (11.4%)

Hue351.22°

Saturation (HSL)70.69%

Lightness22.75%

Dominant channelRed

Hex per channelR 63 · G 11 · B 1D

Keep nerding

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#63111D

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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