Recognised as Colour
#F13105
- #F13105
- Red
- Dark
- Nearest: Orange red
#F13105 is a red with RGB values 241, 49, 5 and HSL 11°, 96%, 48%. It is a dark colour, so black text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Orange red.
Colour values
#F13105#F13105
HEX#F13105
RGBrgb(241, 49, 5)
RGB (0–1)0.9451, 0.1922, 0.0196
RGB percentages94.5%, 19.2%, 2%
HSLhsl(11.2, 95.9%, 48.2%)
HSV / HSBhsv(11.2, 97.9%, 94.5%)
CMYK0%, 79.7%, 97.9%, 5.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,806,725
CSS custom property--colour: #F13105;
Brightness & contrast
Relative luminance0.20908WCAG 2.x, 0 is black and 1 is white
Perceived brightness137 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.18:1
Contrast with white4.05:1WCAG normal text: Fail
Contrast with black5.18:1WCAG normal text: AA
Greyscale equivalent#575757
Inverted#0ECEFA
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.05:1WCAG large text: AA
Contrast with black, large text5.18:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#05C5F1
Analogous#F1054F, #F1A705
Triadic#05F131, #3105F1
Split complementary#05F1A7, #054FF1
Tetradic#4FF105, #05C5F1, #A705F1
Tints, shades & saturation
Channel breakdown
R241
G49
B5
Red241 (94.5%)
Green49 (19.2%)
Blue5 (2%)
Hue11.19°
Saturation (HSL)95.93%
Lightness48.24%
Dominant channelRed
Hex per channelR F1 · G 31 · B 05
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Also reads as
F13105 (chemical formula)
- Formula
- 248,968.79 g/mol
- 13105 atoms
F13105 has a molar mass of 248,968.79 g/mol, made up of 13105 atoms across 1 element: 13105 × F.
Molar mass
Molar mass248,968.79 g/mol
Total atoms per molecule13105
Distinct elements1
Mass of one molecule4.134224 × 10^-19 g
Molecules per gram2.4188336 × 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 × 13105)248,968.79 g/mol, 100%
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