Recognised as Colour
#B537FF
- #B537FF
- Violet
- Dark
- Nearest: Blue violet
#B537FF is a violet with RGB values 181, 55, 255 and HSL 278°, 100%, 61%. It is a dark colour, so black text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Blue violet.
Colour values
#B537FF#B537FF
HEX#B537FF
RGBrgb(181, 55, 255)
RGB (0–1)0.7098, 0.2157, 1
RGB percentages71%, 21.6%, 100%
HSLhsl(277.8, 100%, 60.8%)
HSV / HSBhsv(277.8, 78.4%, 100%)
CMYK29%, 78.4%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,876,351
CSS custom property--colour: #B537FF;
Brightness & contrast
Relative luminance0.19776WCAG 2.x, 0 is black and 1 is white
Perceived brightness137.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.96:1
Contrast with white4.24:1WCAG normal text: Fail
Contrast with black4.96:1WCAG normal text: AA
Greyscale equivalent#606060
Inverted#4AC800
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.24:1WCAG large text: AA
Contrast with black, large text4.96:1WCAG large text: AAA
Named colours
Hue familyviolet
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#81FF37
Analogous#5137FF, #FF37E5
Triadic#FFB537, #37FFB5
Split complementary#E5FF37, #37FF51
Tetradic#FF5137, #81FF37, #37E5FF
Tints, shades & saturation
Channel breakdown
R181
G55
B255
Red181 (71%)
Green55 (21.6%)
Blue255 (100%)
Hue277.8°
Saturation (HSL)100%
Lightness60.78%
Dominant channelBlue
Hex per channelR B5 · G 37 · B FF
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Harmonies
Similar named colours
Also reads as
B537FF (chemical formula)
- Formula
- 5,842.966 g/mol
- 539 atoms
B537FF has a molar mass of 5,842.966 g/mol, made up of 539 atoms across 2 elements: 537 × B, 2 × F.
Molar mass
Molar mass5,842.966 g/mol
Total atoms per molecule539
Distinct elements2
Mass of one molecule9.7024733 × 10^-21 g
Molecules per gram1.030665 × 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
B99.3%
F0.7%
Boron (B × 537)5,804.97 g/mol, 99.35%
Fluorine (F × 2)37.996 g/mol, 0.65%
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