Recognised as Colour
#F80531
- #F80531
- Red
- Dark
- Nearest: Crimson
#F80531 is a red with RGB values 248, 5, 49 and HSL 349°, 96%, 50%. It is a dark colour, so black text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Crimson.
Colour values
#F80531#F80531
HEX#F80531
RGBrgb(248, 5, 49)
RGB (0–1)0.9725, 0.0196, 0.1922
RGB percentages97.3%, 2%, 19.2%
HSLhsl(349.1, 96%, 49.6%)
HSV / HSBhsv(349.1, 98%, 97.3%)
CMYK0%, 98%, 80.2%, 2.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,254,257
CSS custom property--colour: #F80531;
Brightness & contrast
Relative luminance0.20287WCAG 2.x, 0 is black and 1 is white
Perceived brightness136.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.06:1
Contrast with white4.15:1WCAG normal text: Fail
Contrast with black5.06:1WCAG normal text: AA
Greyscale equivalent#3C3C3C
Inverted#07FACE
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.15:1WCAG large text: AA
Contrast with black, large text5.06:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#05F8CC
Analogous#F805AB, #F85205
Triadic#31F805, #0531F8
Split complementary#05F852, #05ABF8
Tetradic#ABF805, #05F8CC, #5205F8
Tints, shades & saturation
Channel breakdown
R248
G5
B49
Red248 (97.3%)
Green5 (2%)
Blue49 (19.2%)
Hue349.14°
Saturation (HSL)96.05%
Lightness49.61%
Dominant channelRed
Hex per channelR F8 · G 05 · B 31
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Also reads as
F80531 (chemical formula)
- Formula
- 1,529,927.938 g/mol
- 80531 atoms
F80531 has a molar mass of 1,529,927.938 g/mol, made up of 80531 atoms across 1 element: 80531 × F.
Molar mass
Molar mass1,529,927.938 g/mol
Total atoms per molecule80531
Distinct elements1
Mass of one molecule2.5405051 × 10^-18 g
Molecules per gram3.9362251 × 10^17
Name
NameNot in the name tablea name cannot be worked out from a formula alone: isomers share formulas, and naming depends on bonding the formula does not show
Composition by mass
F100%
Fluorine (F × 80531)1,529,927.938 g/mol, 100%
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