Recognised as Colour
#BB37AC
- #BB37AC
- Magenta
- Dark
- Nearest: Medium orchid
#BB37AC is a magenta with RGB values 187, 55, 172 and HSL 307°, 55%, 47%. It is a dark colour, so white text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Medium orchid.
Colour values
#BB37AC#BB37AC
HEX#BB37AC
RGBrgb(187, 55, 172)
RGB (0–1)0.7333, 0.2157, 0.6745
RGB percentages73.3%, 21.6%, 67.5%
HSLhsl(306.8, 54.5%, 47.5%)
HSV / HSBhsv(306.8, 70.6%, 73.3%)
CMYK0%, 70.6%, 8%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,269,484
CSS custom property--colour: #BB37AC;
Brightness & contrast
Relative luminance0.16276WCAG 2.x, 0 is black and 1 is white
Perceived brightness124.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.94:1
Contrast with white4.94:1WCAG normal text: AA
Contrast with black4.26:1WCAG normal text: Fail
Greyscale equivalent#5C5C5C
Inverted#44C853
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.94:1WCAG large text: AAA
Contrast with black, large text4.26:1WCAG large text: AA
Named colours
Hue familymagenta
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#37BB46
Analogous#8837BB, #BB376A
Triadic#ACBB37, #37ACBB
Split complementary#6ABB37, #37BB88
Tetradic#BB8837, #37BB46, #376ABB
Tints, shades & saturation
Channel breakdown
R187
G55
B172
Red187 (73.3%)
Green55 (21.6%)
Blue172 (67.5%)
Hue306.82°
Saturation (HSL)54.55%
Lightness47.45%
Dominant channelRed
Hex per channelR BB · G 37 · B AC
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Harmonies
Similar named colours
Also reads as
BB37Ac (chemical formula)
- Formula
- 637.78 g/mol
- 39 atoms
BB37Ac has a molar mass of 637.78 g/mol, made up of 39 atoms across 2 elements: 38 × B, 1 × Ac.
Molar mass
Molar mass637.78 g/mol
Total atoms per molecule39
Distinct elements2
Mass of one molecule1.0590586 × 10^-21 g
Molecules per gram9.4423481 × 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
B64.4%
Ac35.6%
Boron (B × 38)410.78 g/mol, 64.408%
Actinium (Ac)227 g/mol, 35.592%
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