Colour

#57021E

#57021E
Red
Dark
Nearest: Maroon

#57021E is a red with RGB values 87, 2, 30 and HSL 340°, 96%, 17%. It is a dark colour, so white text on it reaches 14.7:1 contrast (AAA for normal text). The nearest named colour is Maroon.

Colour values

#57021E#57021E

HEX#57021E

RGBrgb(87, 2, 30)

RGB (0–1)0.3412, 0.0078, 0.1176

RGB percentages34.1%, 0.8%, 11.8%

HSLhsl(340.2, 95.5%, 17.5%)

HSV / HSBhsv(340.2, 97.7%, 34.1%)

CMYK0%, 97.7%, 65.5%, 65.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,702,174

CSS custom property--colour: #57021E;

Brightness & contrast

Relative luminance0.02163WCAG 2.x, 0 is black and 1 is white

Perceived brightness48.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 14.66:1

Contrast with white14.66:1WCAG normal text: AAA

Contrast with black1.43:1WCAG normal text: Fail

Greyscale equivalent#161616

Inverted#A8FDE1

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#1D1E1Eno red cones; affects about 1% of men; ΔE 39.1 from the original

Deuteranopia#332E1Cno green cones; the most common form, about 1% of men; ΔE 38.6 from the original

Tritanopia#60000Fno blue cones; rare, and affects men and women equally; ΔE 13.1 from the original

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

Contrast with white, large text14.66:1WCAG large text: AAA

Contrast with black, large text1.43:1WCAG large text: Fail

Named colours

Maroon · ΔE 32.7 Brown · ΔE 33 Dark red · ΔE 37.4 Sienna · ΔE 39.4 Saddle brown · ΔE 40.2 Indian red · ΔE 40.2

Nearest named CSS colourMaroon (#800000)ΔE 32.7, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#02573B

Analogous#570248, #571102

Triadic#1E5702, #021E57

Split complementary#025711, #024857

Tetradic#485702, #02573B, #110257

Tints, shades & saturation

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

Lighter +40%#FA2B6F

Lighter +30%#ED0552

Lighter +20%#BB0440

Lighter +10%#89032F

Darker −10%#25010D

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#59001D

Less saturated −25%#4C0D22

Channel breakdown

R87

B30

Red87 (34.1%)

Green2 (0.8%)

Blue30 (11.8%)

Hue340.24°

Saturation (HSL)95.51%

Lightness17.45%

Dominant channelRed

Hex per channelR 57 · G 02 · B 1E

Keep nerding

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#57021E

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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