Recognised as Colour

#8B1837

#8B1837
Red
Dark
Nearest: Brown

#8B1837 is a red with RGB values 139, 24, 55 and HSL 344°, 71%, 32%. It is a dark colour, so white text on it reaches 9.2:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#8B1837#8B1837

HEX#8B1837

RGBrgb(139, 24, 55)

RGB (0–1)0.5451, 0.0941, 0.2157

RGB percentages54.5%, 9.4%, 21.6%

HSLhsl(343.8, 70.6%, 32%)

HSV / HSBhsv(343.8, 82.7%, 54.5%)

CMYK0%, 82.7%, 60.4%, 45.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer9,115,703

CSS custom property--colour: #8B1837;

Brightness & contrast

Relative luminance0.06418WCAG 2.x, 0 is black and 1 is white

Perceived brightness80.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 9.2:1

Contrast with white9.2:1WCAG normal text: AAA

Contrast with black2.28:1WCAG normal text: Fail

Greyscale equivalent#333333

Inverted#74E7C8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#393937no red cones; affects about 1% of men; ΔE 50.4 from the original

Deuteranopia#565034no green cones; the most common form, about 1% of men; ΔE 51 from the original

Tritanopia#990026no blue cones; rare, and affects men and women equally; ΔE 15.2 from the original

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

Contrast with white, large text9.2:1WCAG large text: AAA

Contrast with black, large text2.28:1WCAG large text: Fail

Named colours

Brown · ΔE 19.6 Indian red · ΔE 25.2 Maroon · ΔE 26.2 Firebrick · ΔE 27.9 Dark red · ΔE 29.2 Pale violetred · ΔE 32.5

Nearest named CSS colourBrown (#A52A2A)ΔE 19.62, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#188B6C

Analogous#8B1870, #8B3318

Triadic#378B18, #18378B

Split complementary#188B33, #18708B

Tetradic#708B18, #188B6C, #33188B

Tints, shades & saturation

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

Lighter +40%#EA85A0

Lighter +30%#E25A7E

Lighter +20%#DB2E5D

Lighter +10%#B62048

Darker −10%#601026

Darker −20%#340915

Darker −30%#090103

Darker −40%#000000

More saturated +25%#9F042E

Less saturated −25%#772C40

Channel breakdown

R139

G24

B55

Red139 (54.5%)

Green24 (9.4%)

Blue55 (21.6%)

Hue343.83°

Saturation (HSL)70.55%

Lightness31.96%

Dominant channelRed

Hex per channelR 8B · G 18 · B 37

Keep nerding

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

#8B1837

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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