Colour

#D31237

#D31237
Red
Dark
Nearest: Crimson

#D31237 is a red with RGB values 211, 18, 55 and HSL 348°, 84%, 45%. It is a dark colour, so white text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#D31237#D31237

HEX#D31237

RGBrgb(211, 18, 55)

RGB (0–1)0.8275, 0.0706, 0.2157

RGB percentages82.7%, 7.1%, 21.6%

HSLhsl(348.5, 84.3%, 44.9%)

HSV / HSBhsv(348.5, 91.5%, 82.7%)

CMYK0%, 91.5%, 73.9%, 17.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,832,759

CSS custom property--colour: #D31237;

Brightness & contrast

Relative luminance0.14557WCAG 2.x, 0 is black and 1 is white

Perceived brightness117.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.37:1

Contrast with white5.37:1WCAG normal text: AA

Contrast with black3.91:1WCAG normal text: Fail

Greyscale equivalent#3E3E3E

Inverted#2CEDC8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#585136no red cones; affects about 1% of men; ΔE 73.2 from the original

Deuteranopia#857830no green cones; the most common form, about 1% of men; ΔE 73.5 from the original

Tritanopia#E80025no blue cones; rare, and affects men and women equally; ΔE 16.8 from the original

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

Contrast with white, large text5.37:1WCAG large text: AAA

Contrast with black, large text3.91:1WCAG large text: AA

Named colours

Crimson · ΔE 3 Firebrick · ΔE 14.6 Brown · ΔE 20.7 Tomato · ΔE 23.9 Dark red · ΔE 25.7 Indian red · ΔE 27.9

Nearest named CSS colourCrimson (#DC143C)ΔE 2.97, a close match

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#12D3AE

Analogous#D31297, #D34D12

Triadic#37D312, #1237D3

Split complementary#12D34E, #1297D3

Tetradic#98D312, #12D3AE, #4E12D3

Tints, shades & saturation

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

Lighter +40%#F9B8C4

Lighter +30%#F5899E

Lighter +20%#F15A77

Lighter +10%#ED2B50

Darker −10%#A40E2B

Darker −20%#750A1F

Darker −30%#460612

Darker −40%#170206

More saturated +25%#E5002C

Less saturated −25%#B62F49

Channel breakdown

R211

G18

B55

Red211 (82.7%)

Green18 (7.1%)

Blue55 (21.6%)

Hue348.5°

Saturation (HSL)84.28%

Lightness44.9%

Dominant channelRed

Hex per channelR D3 · G 12 · B 37

Keep nerding

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

#D31237

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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