Recognised as Colour
#C81308
- #C81308
- Red
- Dark
- Nearest: Firebrick
#C81308 is a red with RGB values 200, 19, 8 and HSL 3°, 92%, 41%. It is a dark colour, so white text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Firebrick.
Colour values
#C81308#C81308
HEX#C81308
RGBrgb(200, 19, 8)
RGB (0–1)0.7843, 0.0745, 0.0314
RGB percentages78.4%, 7.5%, 3.1%
HSLhsl(3.4, 92.3%, 40.8%)
HSV / HSBhsv(3.4, 96%, 78.4%)
CMYK0%, 90.5%, 96%, 21.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer13,112,072
CSS custom property--colour: #C81308;
Brightness & contrast
Relative luminance0.12763WCAG 2.x, 0 is black and 1 is white
Perceived brightness110.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.91:1
Contrast with white5.91:1WCAG normal text: AA
Contrast with black3.55:1WCAG normal text: Fail
Greyscale equivalent#393939
Inverted#37ECF7
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.91:1WCAG large text: AAA
Contrast with black, large text3.55:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#08BDC8
Analogous#C8085D, #C87308
Triadic#08C813, #1308C8
Split complementary#08C873, #085DC8
Tetradic#5DC808, #08BDC8, #7308C8
Tints, shades & saturation
Channel breakdown
R200
G19
B8
Red200 (78.4%)
Green19 (7.5%)
Blue8 (3.1%)
Hue3.44°
Saturation (HSL)92.31%
Lightness40.78%
Dominant channelRed
Hex per channelR C8 · G 13 · B 08
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Also reads as
C81308 (chemical formula)
- Formula
- 976,590.388 g/mol
- 81308 atoms
C81308 has a molar mass of 976,590.388 g/mol, made up of 81308 atoms across 1 element: 81308 × C.
Molar mass
Molar mass976,590.388 g/mol
Total atoms per molecule81308
Distinct elements1
Mass of one molecule1.6216665 × 10^-18 g
Molecules per gram6.166496 × 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
C100%
Carbon (C × 81308)976,590.388 g/mol, 100%
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