Colour

#55180C

#55180C
Red
Dark
Nearest: Saddle brown

#55180C is a red with RGB values 85, 24, 12 and HSL 10°, 75%, 19%. It is a dark colour, so white text on it reaches 13.8:1 contrast (AAA for normal text). The nearest named colour is Saddle brown.

Colour values

#55180C#55180C

HEX#55180C

RGBrgb(85, 24, 12)

RGB (0–1)0.3333, 0.0941, 0.0471

RGB percentages33.3%, 9.4%, 4.7%

HSLhsl(9.9, 75.3%, 19%)

HSV / HSBhsv(9.9, 85.9%, 33.3%)

CMYK0%, 71.8%, 85.9%, 66.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,576,716

CSS custom property--colour: #55180C;

Brightness & contrast

Relative luminance0.02611WCAG 2.x, 0 is black and 1 is white

Perceived brightness50.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 13.8:1

Contrast with white13.8:1WCAG normal text: AAA

Contrast with black1.52:1WCAG normal text: Fail

Greyscale equivalent#242424

Inverted#AAE7F3

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#2A240Ano red cones; affects about 1% of men; ΔE 29.7 from the original

Deuteranopia#393209no green cones; the most common form, about 1% of men; ΔE 30.2 from the original

Tritanopia#5E0616no blue cones; rare, and affects men and women equally; ΔE 11.5 from the original

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

Contrast with white, large text13.8:1WCAG large text: AAA

Contrast with black, large text1.52:1WCAG large text: Fail

Named colours

Saddle brown · ΔE 26.4 Maroon · ΔE 26.6 Sienna · ΔE 28.6 Brown · ΔE 30.3 Dark red · ΔE 31.4 Firebrick · ΔE 38.2

Nearest named CSS colourSaddle brown (#8B4513)ΔE 26.44, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0C4955

Analogous#550C25, #553D0C

Triadic#0C5518, #180C55

Split complementary#0C553C, #0C2555

Tetradic#25550C, #0C4955, #3C0C55

Tints, shades & saturation

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

Lighter +40%#E56248

Lighter +30%#DB3E1F

Lighter +20%#AE3119

Lighter +10%#822512

Darker −10%#280B06

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#611000

Less saturated −25%#492018

Channel breakdown

R85

G24

B12

Red85 (33.3%)

Green24 (9.4%)

Blue12 (4.7%)

Hue9.86°

Saturation (HSL)75.26%

Lightness19.02%

Dominant channelRed

Hex per channelR 55 · G 18 · B 0C

Keep nerding

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#55180C

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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