Recognised as Colour
#F42845
- #F42845
- Red
- Dark
- Nearest: Crimson
#F42845 is a red with RGB values 244, 40, 69 and HSL 351°, 90%, 56%. It is a dark colour, so black text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Crimson.
Colour values
#F42845#F42845
HEX#F42845
RGBrgb(244, 40, 69)
RGB (0–1)0.9569, 0.1569, 0.2706
RGB percentages95.7%, 15.7%, 27.1%
HSLhsl(351.5, 90.3%, 55.7%)
HSV / HSBhsv(351.5, 83.6%, 95.7%)
CMYK0%, 83.6%, 71.7%, 4.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,001,093
CSS custom property--colour: #F42845;
Brightness & contrast
Relative luminance0.2118WCAG 2.x, 0 is black and 1 is white
Perceived brightness138.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.24:1
Contrast with white4.01:1WCAG normal text: Fail
Contrast with black5.24:1WCAG normal text: AA
Greyscale equivalent#555555
Inverted#0BD7BA
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.01:1WCAG large text: AA
Contrast with black, large text5.24:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#28F4D7
Analogous#F428AB, #F47128
Triadic#45F428, #2845F4
Split complementary#28F471, #28ABF4
Tetradic#ABF428, #28F4D7, #7128F4
Tints, shades & saturation
Channel breakdown
R244
G40
B69
Red244 (95.7%)
Green40 (15.7%)
Blue69 (27.1%)
Hue351.47°
Saturation (HSL)90.27%
Lightness55.69%
Dominant channelRed
Hex per channelR F4 · G 28 · B 45
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Also reads as
F42845 (chemical formula)
- Formula
- 813,969.31 g/mol
- 42845 atoms
F42845 has a molar mass of 813,969.31 g/mol, made up of 42845 atoms across 1 element: 42845 × F.
Molar mass
Molar mass813,969.31 g/mol
Total atoms per molecule42845
Distinct elements1
Mass of one molecule1.3516278 × 10^-18 g
Molecules per gram7.3984863 × 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 × 42845)813,969.31 g/mol, 100%
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