Recognised as Colour
#F33664
- #F33664
- Red
- Dark
- Nearest: Crimson
#F33664 is a red with RGB values 243, 54, 100 and HSL 345°, 89%, 58%. It is a dark colour, so black text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Crimson.
Colour values
#F33664#F33664
HEX#F33664
RGBrgb(243, 54, 100)
RGB (0–1)0.9529, 0.2118, 0.3922
RGB percentages95.3%, 21.2%, 39.2%
HSLhsl(345.4, 88.7%, 58.2%)
HSV / HSBhsv(345.4, 77.8%, 95.3%)
CMYK0%, 77.8%, 58.8%, 4.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,939,172
CSS custom property--colour: #F33664;
Brightness & contrast
Relative luminance0.22613WCAG 2.x, 0 is black and 1 is white
Perceived brightness143.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.52:1
Contrast with white3.8:1WCAG normal text: Fail
Contrast with black5.52:1WCAG normal text: AA
Greyscale equivalent#626262
Inverted#0CC99B
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.8:1WCAG large text: AA
Contrast with black, large text5.52:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#36F3C5
Analogous#F336C2, #F36736
Triadic#64F336, #3664F3
Split complementary#36F367, #36C2F3
Tetradic#C2F336, #36F3C5, #6736F3
Tints, shades & saturation
Channel breakdown
R243
G54
B100
Red243 (95.3%)
Green54 (21.2%)
Blue100 (39.2%)
Hue345.4°
Saturation (HSL)88.73%
Lightness58.24%
Dominant channelRed
Hex per channelR F3 · G 36 · B 64
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Also reads as
F33664 (chemical formula)
- Formula
- 639,548.672 g/mol
- 33664 atoms
F33664 has a molar mass of 639,548.672 g/mol, made up of 33664 atoms across 1 element: 33664 × F.
Molar mass
Molar mass639,548.672 g/mol
Total atoms per molecule33664
Distinct elements1
Mass of one molecule1.0619956 × 10^-18 g
Molecules per gram9.4162353 × 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 × 33664)639,548.672 g/mol, 100%
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