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Recognised as Colour

#FD3931

  • #FD3931
  • Red
  • Dark
  • Nearest: Tomato

#FD3931 is a red with RGB values 253, 57, 49 and HSL 2°, 98%, 59%. It is a dark colour, so black text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Tomato.

Colour values

#FD3931#FD3931
HEX#FD3931
RGBrgb(253, 57, 49)
RGB (0–1)0.9922, 0.2235, 0.1922
RGB percentages99.2%, 22.4%, 19.2%
HSLhsl(2.4, 98.1%, 59.2%)
HSV / HSBhsv(2.4, 80.6%, 99.2%)
CMYK0%, 77.5%, 80.6%, 0.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,595,249
CSS custom property--colour: #FD3931;

Brightness & contrast

Relative luminance0.24031WCAG 2.x, 0 is black and 1 is white
Perceived brightness146 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.81:1
Contrast with white3.62:1WCAG normal text: Fail
Contrast with black5.81:1WCAG normal text: AA
Greyscale equivalent#626262
Inverted#02C6CE

Colour vision & accessibility

Protanopia#786B2Dno red cones; affects about 1% of men; ΔE 77 from the original
Deuteranopia#A89627no green cones; the most common form, about 1% of men; ΔE 77.4 from the original
Tritanopia#FF003Ano blue cones; rare, and affects men and women equally; ΔE 12.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.62:1WCAG large text: AA
Contrast with black, large text5.81:1WCAG large text: AAA

Named colours

Nearest named CSS colourTomato (#FF6347)ΔE 15.76, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#31F5FD
Analogous#FD318F, #FD9F31
Triadic#31FD39, #3931FD
Split complementary#31FD9F, #318FFD
Tetradic#8FFD31, #31F5FD, #9F31FD

Tints, shades & saturation

Lighter +40%#FFFBFB
Lighter +30%#FECBC9
Lighter +20%#FE9A96
Lighter +10%#FD6A64
Darker −10%#F90C02
Darker −20%#C60A02
Darker −30%#940701
Darker −40%#610501
More saturated +25%#FF372F
Less saturated −25%#E3514B

Channel breakdown

R253
G57
B49
Red253 (99.2%)
Green57 (22.4%)
Blue49 (19.2%)
Hue2.35°
Saturation (HSL)98.08%
Lightness59.22%
Dominant channelRed
Hex per channelR FD · G 39 · B 31

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Every value on this page was computed from “fd3931” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.