Recognised as Colour
#F15536
- #F15536
- Red
- Dark
- Nearest: Tomato
#F15536 is a red with RGB values 241, 85, 54 and HSL 10°, 87%, 58%. It is a dark colour, so black text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Tomato.
Colour values
#F15536#F15536
HEX#F15536
RGBrgb(241, 85, 54)
RGB (0–1)0.9451, 0.3333, 0.2118
RGB percentages94.5%, 33.3%, 21.2%
HSLhsl(9.9, 87%, 57.8%)
HSV / HSBhsv(9.9, 77.6%, 94.5%)
CMYK0%, 64.7%, 77.6%, 5.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,815,990
CSS custom property--colour: #F15536;
Brightness & contrast
Relative luminance0.25464WCAG 2.x, 0 is black and 1 is white
Perceived brightness148.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.09:1
Contrast with white3.45:1WCAG normal text: Fail
Contrast with black6.09:1WCAG normal text: AA
Greyscale equivalent#747474
Inverted#0EAAC9
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.45:1WCAG large text: AA
Contrast with black, large text6.09:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#36D2F1
Analogous#F13674, #F1B236
Triadic#36F155, #5536F1
Split complementary#36F1B3, #3674F1
Tetradic#75F136, #36D2F1, #B336F1
Tints, shades & saturation
Channel breakdown
R241
G85
B54
Red241 (94.5%)
Green85 (33.3%)
Blue54 (21.2%)
Hue9.95°
Saturation (HSL)86.98%
Lightness57.84%
Dominant channelRed
Hex per channelR F1 · G 55 · B 36
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Also reads as
F15536 (chemical formula)
- Formula
- 295,152.928 g/mol
- 15536 atoms
F15536 has a molar mass of 295,152.928 g/mol, made up of 15536 atoms across 1 element: 15536 × F.
Molar mass
Molar mass295,152.928 g/mol
Total atoms per molecule15536
Distinct elements1
Mass of one molecule4.9011297 × 10^-19 g
Molecules per gram2.0403459 × 10^18
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 × 15536)295,152.928 g/mol, 100%
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