Recognised as Colour
#FF8337
- #FF8337
- Orange
- Dark
- Nearest: Coral
#FF8337 is a orange with RGB values 255, 131, 55 and HSL 23°, 100%, 61%. It is a dark colour, so black text on it reaches 8.6:1 contrast (AAA for normal text). The nearest named colour is Coral.
Colour values
#FF8337#FF8337
HEX#FF8337
RGBrgb(255, 131, 55)
RGB (0–1)1, 0.5137, 0.2157
RGB percentages100%, 51.4%, 21.6%
HSLhsl(22.8, 100%, 60.8%)
HSV / HSBhsv(22.8, 78.4%, 100%)
CMYK0%, 48.6%, 78.4%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,745,271
CSS custom property--colour: #FF8337;
Brightness & contrast
Relative luminance0.37768WCAG 2.x, 0 is black and 1 is white
Perceived brightness172.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.55:1
Contrast with white2.46:1WCAG normal text: Fail
Contrast with black8.55:1WCAG normal text: AAA
Greyscale equivalent#989898
Inverted#007CC8
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.46:1WCAG large text: Fail
Contrast with black, large text8.55:1WCAG large text: AAA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#37B3FF
Analogous#FF374F, #FFE737
Triadic#37FF83, #8337FF
Split complementary#37FFE7, #374FFF
Tetradic#4FFF37, #37B3FF, #E737FF
Tints, shades & saturation
Channel breakdown
R255
G131
B55
Red255 (100%)
Green131 (51.4%)
Blue55 (21.6%)
Hue22.8°
Saturation (HSL)100%
Lightness60.78%
Dominant channelRed
Hex per channelR FF · G 83 · B 37
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Also reads as
FF8337 (chemical formula)
- Formula
- 158,405.324 g/mol
- 8338 atoms
FF8337 has a molar mass of 158,405.324 g/mol, made up of 8338 atoms across 1 element: 8338 × F.
Molar mass
Molar mass158,405.324 g/mol
Total atoms per molecule8338
Distinct elements1
Mass of one molecule2.6303823 × 10^-19 g
Molecules per gram3.8017288 × 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 × 8338)158,405.324 g/mol, 100%
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