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Recognised as Colour

#D03031

  • #D03031
  • Red
  • Dark
  • Nearest: Firebrick

#D03031 is a red with RGB values 208, 48, 49 and HSL 360°, 63%, 50%. It is a dark colour, so white text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#D03031#D03031
HEX#D03031
RGBrgb(208, 48, 49)
RGB (0–1)0.8157, 0.1882, 0.1922
RGB percentages81.6%, 18.8%, 19.2%
HSLhsl(359.6, 63%, 50.2%)
HSV / HSBhsv(359.6, 76.9%, 81.6%)
CMYK0%, 76.9%, 76.4%, 18.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer13,643,825
CSS custom property--colour: #D03031;

Brightness & contrast

Relative luminance0.15746WCAG 2.x, 0 is black and 1 is white
Perceived brightness120.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.06:1
Contrast with white5.06:1WCAG normal text: AA
Contrast with black4.15:1WCAG normal text: Fail
Greyscale equivalent#525252
Inverted#2FCFCE

Colour vision & accessibility

Protanopia#62582Fno red cones; affects about 1% of men; ΔE 65.5 from the original
Deuteranopia#897B2Ano green cones; the most common form, about 1% of men; ΔE 66.1 from the original
Tritanopia#E50033no blue cones; rare, and affects men and women equally; ΔE 13.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.06:1WCAG large text: AAA
Contrast with black, large text4.15:1WCAG large text: AA

Named colours

Nearest named CSS colourFirebrick (#B22222)ΔE 9.28, clearly different but related
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#30D0CF
Analogous#D03081, #D07F30
Triadic#31D030, #3031D0
Split complementary#30D07F, #3081D0
Tetradic#81D030, #30D0CF, #7F30D0

Tints, shades & saturation

Lighter +40%#F6D6D6
Lighter +30%#ECADAD
Lighter +20%#E38384
Lighter +10%#D95A5A
Darker −10%#A72627
Darker −20%#7E1C1D
Darker −30%#541313
Darker −40%#2A0A0A
More saturated +25%#F01012
Less saturated −25%#B05050

Channel breakdown

R208
G48
B49
Red208 (81.6%)
Green48 (18.8%)
Blue49 (19.2%)
Hue359.63°
Saturation (HSL)62.99%
Lightness50.2%
Dominant channelRed
Hex per channelR D0 · G 30 · B 31

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Every value on this page was computed from “d03031” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.