Recognised as Colour
#F81559
- #F81559
- Red
- Dark
- Nearest: Crimson
#F81559 is a red with RGB values 248, 21, 89 and HSL 342°, 94%, 53%. 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
#F81559#F81559
HEX#F81559
RGBrgb(248, 21, 89)
RGB (0–1)0.9725, 0.0824, 0.349
RGB percentages97.3%, 8.2%, 34.9%
HSLhsl(342, 94.2%, 52.7%)
HSV / HSBhsv(342, 91.5%, 97.3%)
CMYK0%, 91.5%, 64.1%, 2.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,258,393
CSS custom property--colour: #F81559;
Brightness & contrast
Relative luminance0.21214WCAG 2.x, 0 is black and 1 is white
Perceived brightness139.8 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#4A4A4A
Inverted#07EAA6
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#15F8B4
Analogous#F815CB, #F84215
Triadic#59F815, #1559F8
Split complementary#15F842, #15CBF8
Tetradic#CBF815, #15F8B4, #4215F8
Tints, shades & saturation
Channel breakdown
R248
G21
B89
Red248 (97.3%)
Green21 (8.2%)
Blue89 (34.9%)
Hue342.03°
Saturation (HSL)94.19%
Lightness52.75%
Dominant channelRed
Hex per channelR F8 · G 15 · B 59
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Also reads as
F81559 (chemical formula)
- Formula
- 1,549,457.882 g/mol
- 81559 atoms
F81559 has a molar mass of 1,549,457.882 g/mol, made up of 81559 atoms across 1 element: 81559 × F.
Molar mass
Molar mass1,549,457.882 g/mol
Total atoms per molecule81559
Distinct elements1
Mass of one molecule2.5729353 × 10^-18 g
Molecules per gram3.8866115 × 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 × 81559)1,549,457.882 g/mol, 100%
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