Recognised as Colour
#F13613
- #F13613
- Red
- Dark
- Nearest: Orange red
#F13613 is a red with RGB values 241, 54, 19 and HSL 9°, 89%, 51%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Orange red.
Colour values
#F13613#F13613
HEX#F13613
RGBrgb(241, 54, 19)
RGB (0–1)0.9451, 0.2118, 0.0745
RGB percentages94.5%, 21.2%, 7.5%
HSLhsl(9.5, 88.8%, 51%)
HSV / HSBhsv(9.5, 92.1%, 94.5%)
CMYK0%, 77.6%, 92.1%, 5.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,808,019
CSS custom property--colour: #F13613;
Brightness & contrast
Relative luminance0.21386WCAG 2.x, 0 is black and 1 is white
Perceived brightness138.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.28:1
Contrast with white3.98:1WCAG normal text: Fail
Contrast with black5.28:1WCAG normal text: AA
Greyscale equivalent#5B5B5B
Inverted#0EC9EC
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.98:1WCAG large text: AA
Contrast with black, large text5.28:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#13CEF1
Analogous#F1135F, #F1A513
Triadic#13F136, #3613F1
Split complementary#13F1A5, #135FF1
Tetradic#5FF113, #13CEF1, #A513F1
Tints, shades & saturation
Channel breakdown
R241
G54
B19
Red241 (94.5%)
Green54 (21.2%)
Blue19 (7.5%)
Hue9.46°
Saturation (HSL)88.8%
Lightness50.98%
Dominant channelRed
Hex per channelR F1 · G 36 · B 13
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Also reads as
F13613 (chemical formula)
- Formula
- 258,619.774 g/mol
- 13613 atoms
F13613 has a molar mass of 258,619.774 g/mol, made up of 13613 atoms across 1 element: 13613 × F.
Molar mass
Molar mass258,619.774 g/mol
Total atoms per molecule13613
Distinct elements1
Mass of one molecule4.2944824 × 10^-19 g
Molecules per gram2.3285693 × 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 × 13613)258,619.774 g/mol, 100%
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