Recognised as Colour
#FB8420
- #FB8420
- Orange
- Dark
- Nearest: Dark orange
#FB8420 is a orange with RGB values 251, 132, 32 and HSL 27°, 96%, 55%. It is a dark colour, so black text on it reaches 8.4:1 contrast (AAA for normal text). The nearest named colour is Dark orange.
Colour values
#FB8420#FB8420
HEX#FB8420
RGBrgb(251, 132, 32)
RGB (0–1)0.9843, 0.5176, 0.1255
RGB percentages98.4%, 51.8%, 12.5%
HSLhsl(27.4, 96.5%, 55.5%)
HSV / HSBhsv(27.4, 87.3%, 98.4%)
CMYK0%, 47.4%, 87.3%, 1.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,483,360
CSS custom property--colour: #FB8420;
Brightness & contrast
Relative luminance0.37116WCAG 2.x, 0 is black and 1 is white
Perceived brightness170.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.42:1
Contrast with white2.49:1WCAG normal text: Fail
Contrast with black8.42:1WCAG normal text: AAA
Greyscale equivalent#969696
Inverted#047BDF
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.49:1WCAG large text: Fail
Contrast with black, large text8.42:1WCAG large text: AAA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#2097FB
Analogous#FB2029, #FBF220
Triadic#20FB84, #8420FB
Split complementary#20FBF2, #2029FB
Tetradic#29FB20, #2097FB, #F220FB
Tints, shades & saturation
Channel breakdown
R251
G132
B32
Red251 (98.4%)
Green132 (51.8%)
Blue32 (12.5%)
Hue27.4°
Saturation (HSL)96.48%
Lightness55.49%
Dominant channelRed
Hex per channelR FB · G 84 · B 20
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Also reads as
FB8420 (chemical formula)
- Formula
- 91,039.198 g/mol
- 8421 atoms
FB8420 has a molar mass of 91,039.198 g/mol, made up of 8421 atoms across 2 elements: 1 × F, 8420 × B.
Molar mass
Molar mass91,039.198 g/mol
Total atoms per molecule8421
Distinct elements2
Mass of one molecule1.5117414 × 10^-19 g
Molecules per gram6.6148878 × 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
F0%
B100%
Fluorine (F)18.998 g/mol, 0.021%
Boron (B × 8420)91,020.2 g/mol, 99.979%
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