Recognised as Colour
#F22808
- #F22808
- Red
- Dark
- Nearest: Orange red
#F22808 is a red with RGB values 242, 40, 8 and HSL 8°, 94%, 49%. It is a dark colour, so black text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Orange red.
Colour values
#F22808#F22808
HEX#F22808
RGBrgb(242, 40, 8)
RGB (0–1)0.949, 0.1569, 0.0314
RGB percentages94.9%, 15.7%, 3.1%
HSLhsl(8.2, 93.6%, 49%)
HSV / HSBhsv(8.2, 96.7%, 94.9%)
CMYK0%, 83.5%, 96.7%, 5.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,869,960
CSS custom property--colour: #F22808;
Brightness & contrast
Relative luminance0.20412WCAG 2.x, 0 is black and 1 is white
Perceived brightness135.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.08:1
Contrast with white4.13:1WCAG normal text: Fail
Contrast with black5.08:1WCAG normal text: AA
Greyscale equivalent#515151
Inverted#0DD7F7
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.13:1WCAG large text: AA
Contrast with black, large text5.08:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#08D2F2
Analogous#F2085D, #F29D08
Triadic#08F228, #2808F2
Split complementary#08F29D, #085DF2
Tetradic#5DF208, #08D2F2, #9D08F2
Tints, shades & saturation
Channel breakdown
R242
G40
B8
Red242 (94.9%)
Green40 (15.7%)
Blue8 (3.1%)
Hue8.21°
Saturation (HSL)93.6%
Lightness49.02%
Dominant channelRed
Hex per channelR F2 · G 28 · B 08
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Also reads as
F22808 (chemical formula)
- Formula
- 433,306.384 g/mol
- 22808 atoms
F22808 has a molar mass of 433,306.384 g/mol, made up of 22808 atoms across 1 element: 22808 × F.
Molar mass
Molar mass433,306.384 g/mol
Total atoms per molecule22808
Distinct elements1
Mass of one molecule7.1952218 × 10^-19 g
Molecules per gram1.3898112 × 10^18
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 × 22808)433,306.384 g/mol, 100%
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