Recognised as Colour
#BB3F57
- #BB3F57
- Red
- Dark
- Nearest: Indian red
#BB3F57 is a red with RGB values 187, 63, 87 and HSL 348°, 50%, 49%. It is a dark colour, so white text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Indian red.
Colour values
#BB3F57#BB3F57
HEX#BB3F57
RGBrgb(187, 63, 87)
RGB (0–1)0.7333, 0.2471, 0.3412
RGB percentages73.3%, 24.7%, 34.1%
HSLhsl(348.4, 49.6%, 49%)
HSV / HSBhsv(348.4, 66.3%, 73.3%)
CMYK0%, 66.3%, 53.5%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,271,447
CSS custom property--colour: #BB3F57;
Brightness & contrast
Relative luminance0.14808WCAG 2.x, 0 is black and 1 is white
Perceived brightness116.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.3:1
Contrast with white5.3:1WCAG normal text: AA
Contrast with black3.96:1WCAG normal text: Fail
Greyscale equivalent#5B5B5B
Inverted#44C0A8
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.3:1WCAG large text: AAA
Contrast with black, large text3.96:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#3FBBA3
Analogous#BB3F95, #BB653F
Triadic#57BB3F, #3F57BB
Split complementary#3FBB65, #3F95BB
Tetradic#95BB3F, #3FBBA3, #653FBB
Tints, shades & saturation
Channel breakdown
R187
G63
B87
Red187 (73.3%)
Green63 (24.7%)
Blue87 (34.1%)
Hue348.39°
Saturation (HSL)49.6%
Lightness49.02%
Dominant channelRed
Hex per channelR BB · G 3F · B 57
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Harmonies
Similar named colours
Also reads as
BB3F57 (chemical formula)
- Formula
- 1,126.126 g/mol
- 61 atoms
BB3F57 has a molar mass of 1,126.126 g/mol, made up of 61 atoms across 2 elements: 4 × B, 57 × F.
Molar mass
Molar mass1,126.126 g/mol
Total atoms per molecule61
Distinct elements2
Mass of one molecule1.8699762 × 10^-21 g
Molecules per gram5.3476616 × 10^20
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
B3.8%
F96.2%
Boron (B × 4)43.24 g/mol, 3.84%
Fluorine (F × 57)1,082.886 g/mol, 96.16%
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