Recognised as Colour
#F73C38
- #F73C38
- Red
- Dark
- Nearest: Tomato
#F73C38 is a red with RGB values 247, 60, 56 and HSL 1°, 92%, 59%. It is a dark colour, so black text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Tomato.
Colour values
#F73C38#F73C38
HEX#F73C38
RGBrgb(247, 60, 56)
RGB (0–1)0.9686, 0.2353, 0.2196
RGB percentages96.9%, 23.5%, 22%
HSLhsl(1.3, 92.3%, 59.4%)
HSV / HSBhsv(1.3, 77.3%, 96.9%)
CMYK0%, 75.7%, 77.3%, 3.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,202,808
CSS custom property--colour: #F73C38;
Brightness & contrast
Relative luminance0.23291WCAG 2.x, 0 is black and 1 is white
Perceived brightness143.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.66:1
Contrast with white3.71:1WCAG normal text: Fail
Contrast with black5.66:1WCAG normal text: AA
Greyscale equivalent#636363
Inverted#08C3C7
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.71:1WCAG large text: AA
Contrast with black, large text5.66:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#38F3F7
Analogous#F73894, #F79B38
Triadic#38F73C, #3C38F7
Split complementary#38F79B, #3894F7
Tetradic#94F738, #38F3F7, #9B38F7
Tints, shades & saturation
Channel breakdown
R247
G60
B56
Red247 (96.9%)
Green60 (23.5%)
Blue56 (22%)
Hue1.26°
Saturation (HSL)92.27%
Lightness59.41%
Dominant channelRed
Hex per channelR F7 · G 3C · B 38
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Also reads as
F73C38 (chemical formula)
- Formula
- 1,843.272 g/mol
- 111 atoms
F73C38 has a molar mass of 1,843.272 g/mol, made up of 111 atoms across 2 elements: 73 × F, 38 × C.
Molar mass
Molar mass1,843.272 g/mol
Total atoms per molecule111
Distinct elements2
Mass of one molecule3.0608252 × 10^-21 g
Molecules per gram3.2670928 × 10^20
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
F75.2%
C24.8%
Fluorine (F × 73)1,386.854 g/mol, 75.239%
Carbon (C × 38)456.418 g/mol, 24.761%
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