Recognised as Colour
#BF373F
- #BF373F
- Red
- Dark
- Nearest: Brown
#BF373F is a red with RGB values 191, 55, 63 and HSL 356°, 55%, 48%. It is a dark colour, so white text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Brown.
Colour values
#BF373F#BF373F
HEX#BF373F
RGBrgb(191, 55, 63)
RGB (0–1)0.749, 0.2157, 0.2471
RGB percentages74.9%, 21.6%, 24.7%
HSLhsl(356.5, 55.3%, 48.2%)
HSV / HSBhsv(356.5, 71.2%, 74.9%)
CMYK0%, 71.2%, 67%, 25.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,531,519
CSS custom property--colour: #BF373F;
Brightness & contrast
Relative luminance0.14168WCAG 2.x, 0 is black and 1 is white
Perceived brightness114.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.48:1
Contrast with white5.48:1WCAG normal text: AA
Contrast with black3.83:1WCAG normal text: Fail
Greyscale equivalent#545454
Inverted#40C8C0
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.48:1WCAG large text: AAA
Contrast with black, large text3.83:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#37BFB7
Analogous#BF3783, #BF7337
Triadic#3FBF37, #373FBF
Split complementary#37BF73, #3783BF
Tetradic#83BF37, #37BFB7, #7337BF
Tints, shades & saturation
Channel breakdown
R191
G55
B63
Red191 (74.9%)
Green55 (21.6%)
Blue63 (24.7%)
Hue356.47°
Saturation (HSL)55.28%
Lightness48.24%
Dominant channelRed
Hex per channelR BF · G 37 · B 3F
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Also reads as
BF373F (chemical formula)
- Formula
- 7,116.062 g/mol
- 375 atoms
BF373F has a molar mass of 7,116.062 g/mol, made up of 375 atoms across 2 elements: 1 × B, 374 × F.
Molar mass
Molar mass7,116.062 g/mol
Total atoms per molecule375
Distinct elements2
Mass of one molecule1.1816499 × 10^-20 g
Molecules per gram8.4627435 × 10^19
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
B0.2%
F99.8%
Boron (B)10.81 g/mol, 0.152%
Fluorine (F × 374)7,105.252 g/mol, 99.848%
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