Recognised as Colour
#C81306
- #C81306
- Red
- Dark
- Nearest: Firebrick
#C81306 is a red with RGB values 200, 19, 6 and HSL 4°, 94%, 40%. 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
#C81306#C81306
HEX#C81306
RGBrgb(200, 19, 6)
RGB (0–1)0.7843, 0.0745, 0.0235
RGB percentages78.4%, 7.5%, 2.4%
HSLhsl(4, 94.2%, 40.4%)
HSV / HSBhsv(4, 97%, 78.4%)
CMYK0%, 90.5%, 97%, 21.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer13,112,070
CSS custom property--colour: #C81306;
Brightness & contrast
Relative luminance0.12758WCAG 2.x, 0 is black and 1 is white
Perceived brightness110.3 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#37ECF9
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#06BBC8
Analogous#C8065A, #C87406
Triadic#06C813, #1306C8
Split complementary#06C874, #065AC8
Tetradic#5AC806, #06BBC8, #7406C8
Tints, shades & saturation
Channel breakdown
R200
G19
B6
Red200 (78.4%)
Green19 (7.5%)
Blue6 (2.4%)
Hue4.02°
Saturation (HSL)94.17%
Lightness40.39%
Dominant channelRed
Hex per channelR C8 · G 13 · B 06
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Also reads as
C81306 (chemical formula)
- Formula
- 976,566.366 g/mol
- 81306 atoms
C81306 has a molar mass of 976,566.366 g/mol, made up of 81306 atoms across 1 element: 81306 × C.
Molar mass
Molar mass976,566.366 g/mol
Total atoms per molecule81306
Distinct elements1
Mass of one molecule1.6216266 × 10^-18 g
Molecules per gram6.1666477 × 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 × 81306)976,566.366 g/mol, 100%
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