Recognised as Colour

#55171D

#55171D
Red
Dark
Nearest: Maroon

#55171D is a red with RGB values 85, 23, 29 and HSL 354°, 57%, 21%. It is a dark colour, so white text on it reaches 13.8:1 contrast (AAA for normal text). The nearest named colour is Maroon.

Colour values

#55171D#55171D

HEX#55171D

RGBrgb(85, 23, 29)

RGB (0–1)0.3333, 0.0902, 0.1137

RGB percentages33.3%, 9%, 11.4%

HSLhsl(354.2, 57.4%, 21.2%)

HSV / HSBhsv(354.2, 72.9%, 33.3%)

CMYK0%, 72.9%, 65.9%, 66.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,576,477

CSS custom property--colour: #55171D;

Brightness & contrast

Relative luminance0.02633WCAG 2.x, 0 is black and 1 is white

Perceived brightness50.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 13.76:1

Contrast with white13.76:1WCAG normal text: AAA

Contrast with black1.53:1WCAG normal text: Fail

Greyscale equivalent#252525

Inverted#AAE8E2

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#27251Dno red cones; affects about 1% of men; ΔE 30.8 from the original

Deuteranopia#37321Bno green cones; the most common form, about 1% of men; ΔE 31.1 from the original

Tritanopia#5E091Ano blue cones; rare, and affects men and women equally; ΔE 8.4 from the original

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

Contrast with white, large text13.76:1WCAG large text: AAA

Contrast with black, large text1.53:1WCAG large text: Fail

Named colours

Maroon · ΔE 32.9 Brown · ΔE 33.6 Sienna · ΔE 34.5 Saddle brown · ΔE 34.6 Black · ΔE 36.5 Dark red · ΔE 37.7

Nearest named CSS colourMaroon (#800000)ΔE 32.88, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#17554F

Analogous#55173C, #553017

Triadic#1D5517, #171D55

Split complementary#175530, #173C55

Tetradic#3C5517, #17554F, #301755

Tints, shades & saturation

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

Lighter +40%#D5636E

Lighter +30%#CA3B49

Lighter +20%#A52D38

Lighter +10%#7D222B

Darker −10%#2D0C0F

Darker −20%#050102

Darker −30%#000000

Darker −40%#000000

More saturated +25%#620A12

Less saturated −25%#482528

Channel breakdown

R85

G23

B29

Red85 (33.3%)

Green23 (9%)

Blue29 (11.4%)

Hue354.19°

Saturation (HSL)57.41%

Lightness21.18%

Dominant channelRed

Hex per channelR 55 · G 17 · B 1D

Keep nerding

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#55171D

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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