Recognised as Colour
#FB6915
- #FB6915
- Orange
- Dark
- Nearest: Orange red
#FB6915 is a orange with RGB values 251, 105, 21 and HSL 22°, 97%, 53%. It is a dark colour, so black text on it reaches 7.1:1 contrast (AAA for normal text). The nearest named colour is Orange red.
Colour values
#FB6915#FB6915
HEX#FB6915
RGBrgb(251, 105, 21)
RGB (0–1)0.9843, 0.4118, 0.0824
RGB percentages98.4%, 41.2%, 8.2%
HSLhsl(21.9, 96.6%, 53.3%)
HSV / HSBhsv(21.9, 91.6%, 98.4%)
CMYK0%, 58.2%, 91.6%, 1.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,476,437
CSS custom property--colour: #FB6915;
Brightness & contrast
Relative luminance0.30667WCAG 2.x, 0 is black and 1 is white
Perceived brightness159.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.13:1
Contrast with white2.94:1WCAG normal text: Fail
Contrast with black7.13:1WCAG normal text: AAA
Greyscale equivalent#828282
Inverted#0496EA
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.94:1WCAG large text: Fail
Contrast with black, large text7.13:1WCAG large text: AAA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#15A7FB
Analogous#FB1534, #FBDC15
Triadic#15FB69, #6915FB
Split complementary#15FBDC, #1534FB
Tetradic#34FB15, #15A7FB, #DC15FB
Tints, shades & saturation
Channel breakdown
R251
G105
B21
Red251 (98.4%)
Green105 (41.2%)
Blue21 (8.2%)
Hue21.91°
Saturation (HSL)96.64%
Lightness53.33%
Dominant channelRed
Hex per channelR FB · G 69 · B 15
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Harmonies
Similar named colours
Also reads as
FB6915 (chemical formula)
- Formula
- 74,770.148 g/mol
- 6916 atoms
FB6915 has a molar mass of 74,770.148 g/mol, made up of 6916 atoms across 2 elements: 1 × F, 6915 × B.
Molar mass
Molar mass74,770.148 g/mol
Total atoms per molecule6916
Distinct elements2
Mass of one molecule1.2415875 × 10^-19 g
Molecules per gram8.0542047 × 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, 0.025%
Boron (B × 6915)74,751.15 g/mol, 99.975%
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