Recognised as Colour
#F22900
- #F22900
- Red
- Dark
- Nearest: Orange red
#F22900 is a red with RGB values 242, 41, 0 and HSL 10°, 100%, 47%. It is a dark colour, so black text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Orange red.
Colour values
#F22900#F22900
HEX#F22900
RGBrgb(242, 41, 0)
RGB (0–1)0.949, 0.1608, 0
RGB percentages94.9%, 16.1%, 0%
HSLhsl(10.2, 100%, 47.5%)
HSV / HSBhsv(10.2, 100%, 94.9%)
CMYK0%, 83.1%, 100%, 5.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,870,208
CSS custom property--colour: #F22900;
Brightness & contrast
Relative luminance0.20463WCAG 2.x, 0 is black and 1 is white
Perceived brightness136 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.09:1
Contrast with white4.12:1WCAG normal text: Fail
Contrast with black5.09:1WCAG normal text: AA
Greyscale equivalent#515151
Inverted#0DD6FF
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.12:1WCAG large text: AA
Contrast with black, large text5.09:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#00C9F2
Analogous#F20050, #F2A200
Triadic#00F229, #2900F2
Split complementary#00F2A2, #0050F2
Tetradic#50F200, #00C9F2, #A200F2
Tints, shades & saturation
Channel breakdown
R242
G41
B0
Red242 (94.9%)
Green41 (16.1%)
Blue0 (0%)
Hue10.17°
Saturation (HSL)100%
Lightness47.45%
Dominant channelRed
Hex per channelR F2 · G 29 · B 00
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Also reads as
F22900 (chemical formula)
- Formula
- 435,054.2 g/mol
- 22900 atoms
F22900 has a molar mass of 435,054.2 g/mol, made up of 22900 atoms across 1 element: 22900 × F.
Molar mass
Molar mass435,054.2 g/mol
Total atoms per molecule22900
Distinct elements1
Mass of one molecule7.224245 × 10^-19 g
Molecules per gram1.3842277 × 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 × 22900)435,054.2 g/mol, 100%
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