Recognised as Colour
#F43543
- #F43543
- Red
- Dark
- Nearest: Crimson
#F43543 is a red with RGB values 244, 53, 67 and HSL 356°, 90%, 58%. It is a dark colour, so black text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Crimson.
Colour values
#F43543#F43543
HEX#F43543
RGBrgb(244, 53, 67)
RGB (0–1)0.9569, 0.2078, 0.2627
RGB percentages95.7%, 20.8%, 26.3%
HSLhsl(355.6, 89.7%, 58.2%)
HSV / HSBhsv(355.6, 78.3%, 95.7%)
CMYK0%, 78.3%, 72.5%, 4.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,004,419
CSS custom property--colour: #F43543;
Brightness & contrast
Relative luminance0.22185WCAG 2.x, 0 is black and 1 is white
Perceived brightness141.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.44:1
Contrast with white3.86:1WCAG normal text: Fail
Contrast with black5.44:1WCAG normal text: AA
Greyscale equivalent#5F5F5F
Inverted#0BCABC
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.86:1WCAG large text: AA
Contrast with black, large text5.44:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#35F4E6
Analogous#F435A2, #F48635
Triadic#43F435, #3543F4
Split complementary#35F486, #35A3F4
Tetradic#A3F435, #35F4E6, #8735F4
Tints, shades & saturation
Channel breakdown
R244
G53
B67
Red244 (95.7%)
Green53 (20.8%)
Blue67 (26.3%)
Hue355.6°
Saturation (HSL)89.67%
Lightness58.24%
Dominant channelRed
Hex per channelR F4 · G 35 · B 43
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Also reads as
F43543 (chemical formula)
- Formula
- 827,229.914 g/mol
- 43543 atoms
F43543 has a molar mass of 827,229.914 g/mol, made up of 43543 atoms across 1 element: 43543 × F.
Molar mass
Molar mass827,229.914 g/mol
Total atoms per molecule43543
Distinct elements1
Mass of one molecule1.3736476 × 10^-18 g
Molecules per gram7.2798876 × 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
F100%
Fluorine (F × 43543)827,229.914 g/mol, 100%
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