Recognised as Colour
#FF0313
- #FF0313
- Red
- Dark
- Nearest: Red
#FF0313 is a red with RGB values 255, 3, 19 and HSL 356°, 100%, 51%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Red.
Colour values
#FF0313#FF0313
HEX#FF0313
RGBrgb(255, 3, 19)
RGB (0–1)1, 0.0118, 0.0745
RGB percentages100%, 1.2%, 7.5%
HSLhsl(356.2, 100%, 50.6%)
HSV / HSBhsv(356.2, 98.8%, 100%)
CMYK0%, 98.8%, 92.5%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,712,467
CSS custom property--colour: #FF0313;
Brightness & contrast
Relative luminance0.21372WCAG 2.x, 0 is black and 1 is white
Perceived brightness139.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.27:1
Contrast with white3.98:1WCAG normal text: Fail
Contrast with black5.27:1WCAG normal text: AA
Greyscale equivalent#3A3A3A
Inverted#00FCEC
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.98:1WCAG large text: AA
Contrast with black, large text5.27:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#03FFEF
Analogous#FF0391, #FF7103
Triadic#13FF03, #0313FF
Split complementary#03FF71, #0391FF
Tetradic#91FF03, #03FFEF, #7103FF
Tints, shades & saturation
Channel breakdown
R255
G3
B19
Red255 (100%)
Green3 (1.2%)
Blue19 (7.5%)
Hue356.19°
Saturation (HSL)100%
Lightness50.59%
Dominant channelRed
Hex per channelR FF · G 03 · B 13
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