Recognised as Colour
#FB6231
- #FB6231
- Red
- Dark
- Nearest: Tomato
#FB6231 is a red with RGB values 251, 98, 49 and HSL 15°, 96%, 59%. It is a dark colour, so black text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Tomato.
Colour values
#FB6231#FB6231
HEX#FB6231
RGBrgb(251, 98, 49)
RGB (0–1)0.9843, 0.3843, 0.1922
RGB percentages98.4%, 38.4%, 19.2%
HSLhsl(14.6, 96.2%, 58.8%)
HSV / HSBhsv(14.6, 80.5%, 98.4%)
CMYK0%, 61%, 80.5%, 1.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,474,673
CSS custom property--colour: #FB6231;
Brightness & contrast
Relative luminance0.29466WCAG 2.x, 0 is black and 1 is white
Perceived brightness157.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.89:1
Contrast with white3.05:1WCAG normal text: Fail
Contrast with black6.89:1WCAG normal text: AA
Greyscale equivalent#7F7F7F
Inverted#049DCE
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.05:1WCAG large text: AA
Contrast with black, large text6.89:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#31CAFB
Analogous#FB3165, #FBC731
Triadic#31FB62, #6231FB
Split complementary#31FBC7, #3165FB
Tetradic#65FB31, #31CAFB, #C731FB
Tints, shades & saturation
Channel breakdown
R251
G98
B49
Red251 (98.4%)
Green98 (38.4%)
Blue49 (19.2%)
Hue14.55°
Saturation (HSL)96.19%
Lightness58.82%
Dominant channelRed
Hex per channelR FB · G 62 · B 31
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Also reads as
FB6231 (chemical formula)
- Formula
- 67,376.108 g/mol
- 6232 atoms
FB6231 has a molar mass of 67,376.108 g/mol, made up of 6232 atoms across 2 elements: 1 × F, 6231 × B.
Molar mass
Molar mass67,376.108 g/mol
Total atoms per molecule6232
Distinct elements2
Mass of one molecule1.1188066 × 10^-19 g
Molecules per gram8.9380953 × 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, 0.028%
Boron (B × 6231)67,357.11 g/mol, 99.972%
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