Recognised as Colour
#F42564
- #F42564
- Red
- Dark
- Nearest: Crimson
#F42564 is a red with RGB values 244, 37, 100 and HSL 342°, 90%, 55%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Crimson.
Colour values
#F42564#F42564
HEX#F42564
RGBrgb(244, 37, 100)
RGB (0–1)0.9569, 0.1451, 0.3922
RGB percentages95.7%, 14.5%, 39.2%
HSLhsl(341.7, 90.4%, 55.1%)
HSV / HSBhsv(341.7, 84.8%, 95.7%)
CMYK0%, 84.8%, 59%, 4.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,000,356
CSS custom property--colour: #F42564;
Brightness & contrast
Relative luminance0.21476WCAG 2.x, 0 is black and 1 is white
Perceived brightness140.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.3:1
Contrast with white3.97:1WCAG normal text: Fail
Contrast with black5.3:1WCAG normal text: AA
Greyscale equivalent#565656
Inverted#0BDA9B
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.97:1WCAG large text: AA
Contrast with black, large text5.3:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#25F4B5
Analogous#F425CB, #F44E25
Triadic#64F425, #2564F4
Split complementary#25F44E, #25CBF4
Tetradic#CBF425, #25F4B5, #4E25F4
Tints, shades & saturation
Channel breakdown
R244
G37
B100
Red244 (95.7%)
Green37 (14.5%)
Blue100 (39.2%)
Hue341.74°
Saturation (HSL)90.39%
Lightness55.1%
Dominant channelRed
Hex per channelR F4 · G 25 · B 64
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Also reads as
F42564 (chemical formula)
- Formula
- 808,630.872 g/mol
- 42564 atoms
F42564 has a molar mass of 808,630.872 g/mol, made up of 42564 atoms across 1 element: 42564 × F.
Molar mass
Molar mass808,630.872 g/mol
Total atoms per molecule42564
Distinct elements1
Mass of one molecule1.3427632 × 10^-18 g
Molecules per gram7.4473298 × 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 × 42564)808,630.872 g/mol, 100%
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