Recognised as Colour
#F40C43
- #F40C43
- Red
- Dark
- Nearest: Crimson
#F40C43 is a red with RGB values 244, 12, 67 and HSL 346°, 91%, 50%. It is a dark colour, so black text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Crimson.
Colour values
#F40C43#F40C43
HEX#F40C43
RGBrgb(244, 12, 67)
RGB (0–1)0.9569, 0.0471, 0.2627
RGB percentages95.7%, 4.7%, 26.3%
HSLhsl(345.8, 91.3%, 50.2%)
HSV / HSBhsv(345.8, 95.1%, 95.7%)
CMYK0%, 95.1%, 72.5%, 4.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,993,923
CSS custom property--colour: #F40C43;
Brightness & contrast
Relative luminance0.19901WCAG 2.x, 0 is black and 1 is white
Perceived brightness135.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.98:1
Contrast with white4.22:1WCAG normal text: Fail
Contrast with black4.98:1WCAG normal text: AA
Greyscale equivalent#414141
Inverted#0BF3BC
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.22:1WCAG large text: AA
Contrast with black, large text4.98:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#0CF4BD
Analogous#F40CB7, #F4490C
Triadic#43F40C, #0C43F4
Split complementary#0CF449, #0CB7F4
Tetradic#B7F40C, #0CF4BD, #490CF4
Tints, shades & saturation
Channel breakdown
R244
G12
B67
Red244 (95.7%)
Green12 (4.7%)
Blue67 (26.3%)
Hue345.78°
Saturation (HSL)91.34%
Lightness50.2%
Dominant channelRed
Hex per channelR F4 · G 0C · B 43
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Also reads as
F40C43 (chemical formula)
- Formula
- 1,276.393 g/mol
- 83 atoms
F40C43 has a molar mass of 1,276.393 g/mol, made up of 83 atoms across 2 elements: 40 × F, 43 × C.
Molar mass
Molar mass1,276.393 g/mol
Total atoms per molecule83
Distinct elements2
Mass of one molecule2.1195004 × 10^-21 g
Molecules per gram4.7180929 × 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
F59.5%
C40.5%
Fluorine (F × 40)759.92 g/mol, 59.537%
Carbon (C × 43)516.473 g/mol, 40.463%
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