Recognised as Colour
#FF8300
- #FF8300
- Orange
- Dark
- Nearest: Dark orange
#FF8300 is a orange with RGB values 255, 131, 0 and HSL 31°, 100%, 50%. It is a dark colour, so black text on it reaches 8.5:1 contrast (AAA for normal text). The nearest named colour is Dark orange.
Colour values
#FF8300#FF8300
HEX#FF8300
RGBrgb(255, 131, 0)
RGB (0–1)1, 0.5137, 0
RGB percentages100%, 51.4%, 0%
HSLhsl(30.8, 100%, 50%)
HSV / HSBhsv(30.8, 100%, 100%)
CMYK0%, 48.6%, 100%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,745,216
CSS custom property--colour: #FF8300;
Brightness & contrast
Relative luminance0.37493WCAG 2.x, 0 is black and 1 is white
Perceived brightness171.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.5:1
Contrast with white2.47:1WCAG normal text: Fail
Contrast with black8.5:1WCAG normal text: AAA
Greyscale equivalent#949494
Inverted#007CFF
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.47:1WCAG large text: Fail
Contrast with black, large text8.5:1WCAG large text: AAA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#007CFF
Analogous#FF0300, #FCFF00
Triadic#00FF83, #8300FF
Split complementary#00FCFF, #0300FF
Tetradic#00FF03, #007CFF, #FF00FC
Tints, shades & saturation
Channel breakdown
R255
G131
B0
Red255 (100%)
Green131 (51.4%)
Blue0 (0%)
Hue30.82°
Saturation (HSL)100%
Lightness50%
Dominant channelRed
Hex per channelR FF · G 83 · B 00
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Also reads as
FF8300 (chemical formula)
- Formula
- 157,702.398 g/mol
- 8301 atoms
FF8300 has a molar mass of 157,702.398 g/mol, made up of 8301 atoms across 1 element: 8301 × F.
Molar mass
Molar mass157,702.398 g/mol
Total atoms per molecule8301
Distinct elements1
Mass of one molecule2.6187099 × 10^-19 g
Molecules per gram3.8186742 × 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 × 8301)157,702.398 g/mol, 100%
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