Recognised as Colour
#B540F3
- #B540F3
- Violet
- Dark
- Nearest: Blue violet
#B540F3 is a violet with RGB values 181, 64, 243 and HSL 279°, 88%, 60%. 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
#B540F3#B540F3
HEX#B540F3
RGBrgb(181, 64, 243)
RGB (0–1)0.7098, 0.251, 0.9529
RGB percentages71%, 25.1%, 95.3%
HSLhsl(279.2, 88.2%, 60.2%)
HSV / HSBhsv(279.2, 73.7%, 95.3%)
CMYK25.5%, 73.7%, 0%, 4.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,878,643
CSS custom property--colour: #B540F3;
Brightness & contrast
Relative luminance0.19962WCAG 2.x, 0 is black and 1 is white
Perceived brightness137.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.99:1
Contrast with white4.21:1WCAG normal text: Fail
Contrast with black4.99:1WCAG normal text: AA
Greyscale equivalent#666666
Inverted#4ABF0C
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.21:1WCAG large text: AA
Contrast with black, large text4.99:1WCAG large text: AAA
Named colours
Hue familyviolet
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#7EF340
Analogous#5C40F3, #F340D7
Triadic#F3B540, #40F3B5
Split complementary#D7F340, #40F35C
Tetradic#F35C40, #7EF340, #40D7F3
Tints, shades & saturation
Channel breakdown
R181
G64
B243
Red181 (71%)
Green64 (25.1%)
Blue243 (95.3%)
Hue279.22°
Saturation (HSL)88.18%
Lightness60.2%
Dominant channelBlue
Hex per channelR B5 · G 40 · B F3
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Harmonies
Similar named colours
Also reads as
B540F3 (chemical formula)
- Formula
- 5,894.394 g/mol
- 543 atoms
B540F3 has a molar mass of 5,894.394 g/mol, made up of 543 atoms across 2 elements: 540 × B, 3 × F.
Molar mass
Molar mass5,894.394 g/mol
Total atoms per molecule543
Distinct elements2
Mass of one molecule9.7878715 × 10^-21 g
Molecules per gram1.0216726 × 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%
F1%
Boron (B × 540)5,837.4 g/mol, 99.033%
Fluorine (F × 3)56.994 g/mol, 0.967%
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