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Recognised as Colour

#F53A04

  • #F53A04
  • Red
  • Dark
  • Nearest: Orange red

#F53A04 is a red with RGB values 245, 58, 4 and HSL 13°, 97%, 49%. It is a dark colour, so black text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#F53A04#F53A04
HEX#F53A04
RGBrgb(245, 58, 4)
RGB (0–1)0.9608, 0.2275, 0.0157
RGB percentages96.1%, 22.7%, 1.6%
HSLhsl(13.4, 96.8%, 48.8%)
HSV / HSBhsv(13.4, 98.4%, 96.1%)
CMYK0%, 76.3%, 98.4%, 3.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,071,172
CSS custom property--colour: #F53A04;

Brightness & contrast

Relative luminance0.22447WCAG 2.x, 0 is black and 1 is white
Perceived brightness141.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.49:1
Contrast with white3.83:1WCAG normal text: Fail
Contrast with black5.49:1WCAG normal text: AA
Greyscale equivalent#5E5E5E
Inverted#0AC5FB

Colour vision & accessibility

Protanopia#776800no red cones; affects about 1% of men; ΔE 74.4 from the original
Deuteranopia#A49100no green cones; the most common form, about 1% of men; ΔE 73.9 from the original
Tritanopia#FF0034no blue cones; rare, and affects men and women equally; ΔE 22.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.83:1WCAG large text: AA
Contrast with black, large text5.49:1WCAG large text: AAA

Named colours

Nearest named CSS colourOrange red (#FF4500)ΔE 4.58, a close match
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#04BFF5
Analogous#F50446, #F5B204
Triadic#04F53A, #3A04F5
Split complementary#04F5B2, #0447F5
Tetradic#47F504, #04BFF5, #B304F5

Tints, shades & saturation

Lighter +40%#FED3C7
Lighter +30%#FDAC95
Lighter +20%#FC8563
Lighter +10%#FC5E30
Darker −10%#C32E03
Darker −20%#912202
Darker −30%#5E1602
Darker −40%#2C0A01
More saturated +25%#F93800
Less saturated −25%#D64B23

Channel breakdown

R245
G58
B4
Red245 (96.1%)
Green58 (22.7%)
Blue4 (1.6%)
Hue13.44°
Saturation (HSL)96.79%
Lightness48.82%
Dominant channelRed
Hex per channelR F5 · G 3A · B 04

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Every value on this page was computed from “f53a04” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.