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Recognised as Colour

#FD553D

  • #FD553D
  • Red
  • Dark
  • Nearest: Tomato

#FD553D is a red with RGB values 253, 85, 61 and HSL 7°, 98%, 62%. It is a dark colour, so black text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Tomato.

Colour values

#FD553D#FD553D
HEX#FD553D
RGBrgb(253, 85, 61)
RGB (0–1)0.9922, 0.3333, 0.2392
RGB percentages99.2%, 33.3%, 23.9%
HSLhsl(7.5, 98%, 61.6%)
HSV / HSBhsv(7.5, 75.9%, 99.2%)
CMYK0%, 66.4%, 75.9%, 0.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,602,429
CSS custom property--colour: #FD553D;

Brightness & contrast

Relative luminance0.27717WCAG 2.x, 0 is black and 1 is white
Perceived brightness154.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.54:1
Contrast with white3.21:1WCAG normal text: Fail
Contrast with black6.54:1WCAG normal text: AA
Greyscale equivalent#777777
Inverted#02AAC2

Colour vision & accessibility

Protanopia#857839no red cones; affects about 1% of men; ΔE 68 from the original
Deuteranopia#AF9D36no green cones; the most common form, about 1% of men; ΔE 68.2 from the original
Tritanopia#FF2051no blue cones; rare, and affects men and women equally; ΔE 23.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.21:1WCAG large text: AA
Contrast with black, large text6.54:1WCAG large text: AAA

Named colours

Nearest named CSS colourTomato (#FF6347)ΔE 5.81, clearly different but related
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#3DE5FD
Analogous#FD3D85, #FDB53D
Triadic#3DFD55, #553DFD
Split complementary#3DFDB5, #3D85FD
Tetradic#85FD3D, #3DE5FD, #B53DFD

Tints, shades & saturation

Lighter +40%#FFFFFF
Lighter +30%#FFDAD4
Lighter +20%#FEADA2
Lighter +10%#FE816F
Darker −10%#FC290B
Darker −20%#D21C02
Darker −30%#9F1502
Darker −40%#6D0F01
More saturated +25%#FF543B
Less saturated −25%#E56756

Channel breakdown

R253
G85
B61
Red253 (99.2%)
Green85 (33.3%)
Blue61 (23.9%)
Hue7.5°
Saturation (HSL)97.96%
Lightness61.57%
Dominant channelRed
Hex per channelR FD · G 55 · B 3D

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Every value on this page was computed from “fd553d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.