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Colour

#C31557

  • #C31557
  • Red
  • Dark
  • Nearest: Crimson

#C31557 is a red with RGB values 195, 21, 87 and HSL 337°, 81%, 42%. It is a dark colour, so white text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#C31557#C31557
HEX#C31557
RGBrgb(195, 21, 87)
RGB (0–1)0.7647, 0.0824, 0.3412
RGB percentages76.5%, 8.2%, 34.1%
HSLhsl(337.2, 80.6%, 42.4%)
HSV / HSBhsv(337.2, 89.2%, 76.5%)
CMYK0%, 89.2%, 55.4%, 23.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,784,983
CSS custom property--colour: #C31557;

Brightness & contrast

Relative luminance0.12827WCAG 2.x, 0 is black and 1 is white
Perceived brightness111.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.89:1
Contrast with white5.89:1WCAG normal text: AA
Contrast with black3.57:1WCAG normal text: Fail
Greyscale equivalent#3F3F3F
Inverted#3CEAA8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4C4F58no red cones; affects about 1% of men; ΔE 67.6 from the original
Deuteranopia#777053no green cones; the most common form, about 1% of men; ΔE 68.8 from the original
Tritanopia#D50036no blue cones; rare, and affects men and women equally; ΔE 24.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.89:1WCAG large text: AAA
Contrast with black, large text3.57:1WCAG large text: AA

Named colours

Crimson · ΔE 24.5Medium violet red · ΔE 25.8Brown · ΔE 26.7Indian red · ΔE 26.7Deep pink · ΔE 27.8Pale violetred · ΔE 29
Nearest named CSS colourCrimson (#DC143C)ΔE 24.49, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#15C381
Analogous#C315AE, #C32A15
Triadic#57C315, #1557C3
Split complementary#15C32A, #15AEC3
Tetradic#AEC315, #15C381, #2A15C3

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F6AEC9
Lighter +30%#F180AB
Lighter +20%#EC528C
Lighter +10%#E7246E
Darker −10%#951042
Darker −20%#670B2E
Darker −30%#390619
Darker −40%#0B0105
More saturated +25%#D80052
Less saturated −25%#A8305E

Channel breakdown

R195
G21
B87
Red195 (76.5%)
Green21 (8.2%)
Blue87 (34.1%)
Hue337.24°
Saturation (HSL)80.56%
Lightness42.35%
Dominant channelRed
Hex per channelR C3 · G 15 · B 57

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Every value on this page was computed from “c31557” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.