Colour

#550D1B

#550D1B
Red
Dark
Nearest: Maroon

#550D1B is a red with RGB values 85, 13, 27 and HSL 348°, 73%, 19%. It is a dark colour, so white text on it reaches 14.4:1 contrast (AAA for normal text). The nearest named colour is Maroon.

Colour values

#550D1B#550D1B

HEX#550D1B

RGBrgb(85, 13, 27)

RGB (0–1)0.3333, 0.051, 0.1059

RGB percentages33.3%, 5.1%, 10.6%

HSLhsl(348.3, 73.5%, 19.2%)

HSV / HSBhsv(348.3, 84.7%, 33.3%)

CMYK0%, 84.7%, 68.2%, 66.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,573,915

CSS custom property--colour: #550D1B;

Brightness & contrast

Relative luminance0.02298WCAG 2.x, 0 is black and 1 is white

Perceived brightness48.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 14.39:1

Contrast with white14.39:1WCAG normal text: AAA

Contrast with black1.46:1WCAG normal text: Fail

Greyscale equivalent#1D1D1D

Inverted#AAF2E4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#22201Bno red cones; affects about 1% of men; ΔE 34.4 from the original

Deuteranopia#342F19no green cones; the most common form, about 1% of men; ΔE 34.9 from the original

Tritanopia#5E0013no blue cones; rare, and affects men and women equally; ΔE 9.2 from the original

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

Contrast with white, large text14.39:1WCAG large text: AAA

Contrast with black, large text1.46:1WCAG large text: Fail

Named colours

Maroon · ΔE 31.6 Brown · ΔE 32.6 Sienna · ΔE 36.2 Saddle brown · ΔE 36.4 Dark red · ΔE 36.5 Black · ΔE 38.9

Nearest named CSS colourMaroon (#800000)ΔE 31.63, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0D5547

Analogous#550D3F, #55230D

Triadic#1B550D, #0D1B55

Split complementary#0D5523, #0D3F55

Tetradic#3F550D, #0D5547, #230D55

Tints, shades & saturation

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

Lighter +40%#E34B68

Lighter +30%#DA2145

Lighter +20%#AD1B37

Lighter +10%#811429

Darker −10%#29060D

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#610114

Less saturated −25%#491922

Channel breakdown

R85

G13

B27

Red85 (33.3%)

Green13 (5.1%)

Blue27 (10.6%)

Hue348.33°

Saturation (HSL)73.47%

Lightness19.22%

Dominant channelRed

Hex per channelR 55 · G 0D · B 1B

Keep nerding

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

#550D1B

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

Nerdulate something else