Recognised as Colour
#BB5743
- #BB5743
- Red
- Dark
- Nearest: Indian red
#BB5743 is a red with RGB values 187, 87, 67 and HSL 10°, 47%, 50%. It is a dark colour, so white text on it reaches 4.6:1 contrast (AA for normal text). The nearest named colour is Indian red.
Colour values
#BB5743#BB5743
HEX#BB5743
RGBrgb(187, 87, 67)
RGB (0–1)0.7333, 0.3412, 0.2627
RGB percentages73.3%, 34.1%, 26.3%
HSLhsl(10, 47.2%, 49.8%)
HSV / HSBhsv(10, 64.2%, 73.3%)
CMYK0%, 53.5%, 64.2%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,277,571
CSS custom property--colour: #BB5743;
Brightness & contrast
Relative luminance0.17786WCAG 2.x, 0 is black and 1 is white
Perceived brightness124.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.61:1
Contrast with white4.61:1WCAG normal text: AA
Contrast with black4.56:1WCAG normal text: AA
Greyscale equivalent#6B6B6B
Inverted#44A8BC
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.61:1WCAG large text: AAA
Contrast with black, large text4.56:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#43A7BB
Analogous#BB436B, #BB9343
Triadic#43BB57, #5743BB
Split complementary#43BB93, #436BBB
Tetradic#6BBB43, #43A7BB, #9343BB
Tints, shades & saturation
Channel breakdown
R187
G87
B67
Red187 (73.3%)
Green87 (34.1%)
Blue67 (26.3%)
Hue10°
Saturation (HSL)47.24%
Lightness49.8%
Dominant channelRed
Hex per channelR BB · G 57 · B 43
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Also reads as
BB5743 (chemical formula)
- Formula
- 62,092.64 g/mol
- 5744 atoms
BB5743 has a molar mass of 62,092.64 g/mol, made up of 5744 atoms across 1 element: 5744 × B.
Molar mass
Molar mass62,092.64 g/mol
Total atoms per molecule5744
Distinct elements1
Mass of one molecule1.0310725 × 10^-19 g
Molecules per gram9.6986386 × 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
B100%
Boron (B × 5744)62,092.64 g/mol, 100%
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