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Recognised as Colour

#DE373D

  • #DE373D
  • Red
  • Dark
  • Nearest: Crimson

#DE373D is a red with RGB values 222, 55, 61 and HSL 358°, 72%, 54%. It is a dark colour, so black text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#DE373D#DE373D
HEX#DE373D
RGBrgb(222, 55, 61)
RGB (0–1)0.8706, 0.2157, 0.2392
RGB percentages87.1%, 21.6%, 23.9%
HSLhsl(357.8, 71.7%, 54.3%)
HSV / HSBhsv(357.8, 75.2%, 87.1%)
CMYK0%, 75.2%, 72.5%, 12.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer14,563,133
CSS custom property--colour: #DE373D;

Brightness & contrast

Relative luminance0.18599WCAG 2.x, 0 is black and 1 is white
Perceived brightness130.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.72:1
Contrast with white4.45:1WCAG normal text: Fail
Contrast with black4.72:1WCAG normal text: AA
Greyscale equivalent#5B5B5B
Inverted#21C8C2

Colour vision & accessibility

Protanopia#69613Bno red cones; affects about 1% of men; ΔE 68.6 from the original
Deuteranopia#938437no green cones; the most common form, about 1% of men; ΔE 68.2 from the original
Tritanopia#F4003Bno blue cones; rare, and affects men and women equally; ΔE 15.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.45:1WCAG large text: AA
Contrast with black, large text4.72:1WCAG large text: AAA

Named colours

Nearest named CSS colourCrimson (#DC143C)ΔE 8.59, clearly different but related
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#37DED8
Analogous#DE3791, #DE8537
Triadic#3DDE37, #373DDE
Split complementary#37DE85, #3791DE
Tetradic#91DE37, #37DED8, #8437DE

Tints, shades & saturation

Lighter +40%#FBE6E7
Lighter +30%#F4BABC
Lighter +20%#EC8F92
Lighter +10%#E56367
Darker −10%#C22026
Darker −20%#96191D
Darker −30%#6A1215
Darker −40%#3F0A0C
More saturated +25%#FB1A22
Less saturated −25%#C15458

Channel breakdown

R222
G55
B61
Red222 (87.1%)
Green55 (21.6%)
Blue61 (23.9%)
Hue357.84°
Saturation (HSL)71.67%
Lightness54.31%
Dominant channelRed
Hex per channelR DE · G 37 · B 3D

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Every value on this page was computed from “de373d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.