Colour

#57000B

#57000B
Red
Dark
Nearest: Maroon

#57000B is a red with RGB values 87, 0, 11 and HSL 352°, 100%, 17%. It is a dark colour, so white text on it reaches 14.9:1 contrast (AAA for normal text). The nearest named colour is Maroon.

Colour values

#57000B#57000B

HEX#57000B

RGBrgb(87, 0, 11)

RGB (0–1)0.3412, 0, 0.0431

RGB percentages34.1%, 0%, 4.3%

HSLhsl(352.4, 100%, 17.1%)

HSV / HSBhsv(352.4, 100%, 34.1%)

CMYK0%, 100%, 87.4%, 65.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,701,643

CSS custom property--colour: #57000B;

Brightness & contrast

Relative luminance0.0205WCAG 2.x, 0 is black and 1 is white

Perceived brightness47.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 14.89:1

Contrast with white14.89:1WCAG normal text: AAA

Contrast with black1.41:1WCAG normal text: Fail

Greyscale equivalent#131313

Inverted#A8FFF4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#1F1B0Ano red cones; affects about 1% of men; ΔE 39.7 from the original

Deuteranopia#342E07no green cones; the most common form, about 1% of men; ΔE 39.9 from the original

Tritanopia#610005no blue cones; rare, and affects men and women equally; ΔE 7 from the original

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

Contrast with white, large text14.89:1WCAG large text: AAA

Contrast with black, large text1.41:1WCAG large text: Fail

Named colours

Maroon · ΔE 23.4 Brown · ΔE 27.4 Dark red · ΔE 28.4 Saddle brown · ΔE 32 Sienna · ΔE 33 Firebrick · ΔE 34.9

Nearest named CSS colourMaroon (#800000)ΔE 23.37, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00574C

Analogous#570037, #572000

Triadic#0B5700, #000B57

Split complementary#005720, #003757

Tetradic#375700, #00574C, #200057

Tints, shades & saturation

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

Lighter +40%#FF2440

Lighter +30%#F0001E

Lighter +20%#BD0018

Lighter +10%#8A0011

Darker −10%#240005

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#57000B

Less saturated −25%#4C0B13

Channel breakdown

R87

B11

Red87 (34.1%)

Green0 (0%)

Blue11 (4.3%)

Hue352.41°

Saturation (HSL)100%

Lightness17.06%

Dominant channelRed

Hex per channelR 57 · G 00 · B 0B

Keep nerding

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#57000B

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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