Recognised as Colour
#BF4739
- #BF4739
- Red
- Dark
- Nearest: Brown
#BF4739 is a red with RGB values 191, 71, 57 and HSL 6°, 54%, 49%. It is a dark colour, so white text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Brown.
Colour values
#BF4739#BF4739
HEX#BF4739
RGBrgb(191, 71, 57)
RGB (0–1)0.749, 0.2784, 0.2235
RGB percentages74.9%, 27.8%, 22.4%
HSLhsl(6.3, 54%, 48.6%)
HSV / HSBhsv(6.3, 70.2%, 74.9%)
CMYK0%, 62.8%, 70.2%, 25.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,535,609
CSS custom property--colour: #BF4739;
Brightness & contrast
Relative luminance0.15878WCAG 2.x, 0 is black and 1 is white
Perceived brightness119.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.03:1
Contrast with white5.03:1WCAG normal text: AA
Contrast with black4.18:1WCAG normal text: Fail
Greyscale equivalent#606060
Inverted#40B8C6
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.03:1WCAG large text: AAA
Contrast with black, large text4.18:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#39B1BF
Analogous#BF396E, #BF8A39
Triadic#39BF47, #4739BF
Split complementary#39BF8A, #396EBF
Tetradic#6EBF39, #39B1BF, #8A39BF
Tints, shades & saturation
Channel breakdown
R191
G71
B57
Red191 (74.9%)
Green71 (27.8%)
Blue57 (22.4%)
Hue6.27°
Saturation (HSL)54.03%
Lightness48.63%
Dominant channelRed
Hex per channelR BF · G 47 · B 39
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Also reads as
BF4739 (chemical formula)
- Formula
- 90,042.332 g/mol
- 4740 atoms
BF4739 has a molar mass of 90,042.332 g/mol, made up of 4740 atoms across 2 elements: 1 × B, 4739 × F.
Molar mass
Molar mass90,042.332 g/mol
Total atoms per molecule4740
Distinct elements2
Mass of one molecule1.4951881 × 10^-19 g
Molecules per gram6.6881217 × 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
B0%
F100%
Boron (B)10.81 g/mol, 0.012%
Fluorine (F × 4739)90,031.522 g/mol, 99.988%
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