Recognised as Colour
#F35100
- #F35100
- Orange
- Dark
- Nearest: Orange red
#F35100 is a orange with RGB values 243, 81, 0 and HSL 20°, 100%, 48%. It is a dark colour, so black text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Orange red.
Colour values
#F35100#F35100
HEX#F35100
RGBrgb(243, 81, 0)
RGB (0–1)0.9529, 0.3176, 0
RGB percentages95.3%, 31.8%, 0%
HSLhsl(20, 100%, 47.6%)
HSV / HSBhsv(20, 100%, 95.3%)
CMYK0%, 66.7%, 100%, 4.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,945,984
CSS custom property--colour: #F35100;
Brightness & contrast
Relative luminance0.2494WCAG 2.x, 0 is black and 1 is white
Perceived brightness146.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.99:1
Contrast with white3.51:1WCAG normal text: Fail
Contrast with black5.99:1WCAG normal text: AA
Greyscale equivalent#6E6E6E
Inverted#0CAEFF
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.51:1WCAG large text: AA
Contrast with black, large text5.99:1WCAG large text: AAA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#00A2F3
Analogous#F30029, #F3CA00
Triadic#00F351, #5100F3
Split complementary#00F3CB, #0028F3
Tetradic#29F300, #00A2F3, #CA00F3
Tints, shades & saturation
Channel breakdown
R243
G81
B0
Red243 (95.3%)
Green81 (31.8%)
Blue0 (0%)
Hue20°
Saturation (HSL)100%
Lightness47.65%
Dominant channelRed
Hex per channelR F3 · G 51 · B 00
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Also reads as
F35100 (chemical formula)
- Formula
- 666,829.8 g/mol
- 35100 atoms
F35100 has a molar mass of 666,829.8 g/mol, made up of 35100 atoms across 1 element: 35100 × F.
Molar mass
Molar mass666,829.8 g/mol
Total atoms per molecule35100
Distinct elements1
Mass of one molecule1.1072969 × 10^-18 g
Molecules per gram9.0310013 × 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 × 35100)666,829.8 g/mol, 100%
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