Recognised as Colour
#B511FF
- #B511FF
- Violet
- Dark
- Nearest: Dark violet
#B511FF is a violet with RGB values 181, 17, 255 and HSL 281°, 100%, 53%. It is a dark colour, so white text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Dark violet.
Colour values
#B511FF#B511FF
HEX#B511FF
RGBrgb(181, 17, 255)
RGB (0–1)0.7098, 0.0667, 1
RGB percentages71%, 6.7%, 100%
HSLhsl(281.3, 100%, 53.3%)
HSV / HSBhsv(281.3, 93.3%, 100%)
CMYK29%, 93.3%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,866,623
CSS custom property--colour: #B511FF;
Brightness & contrast
Relative luminance0.17445WCAG 2.x, 0 is black and 1 is white
Perceived brightness131.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.68:1
Contrast with white4.68:1WCAG normal text: AA
Contrast with black4.49:1WCAG normal text: Fail
Greyscale equivalent#454545
Inverted#4AEE00
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.68:1WCAG large text: AAA
Contrast with black, large text4.49:1WCAG large text: AA
Named colours
Hue familyviolet
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#5BFF11
Analogous#3E11FF, #FF11D2
Triadic#FFB511, #11FFB5
Split complementary#D2FF11, #11FF3E
Tetradic#FF3E11, #5BFF11, #11D2FF
Tints, shades & saturation
Channel breakdown
R181
G17
B255
Red181 (71%)
Green17 (6.7%)
Blue255 (100%)
Hue281.34°
Saturation (HSL)100%
Lightness53.33%
Dominant channelBlue
Hex per channelR B5 · G 11 · B FF
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Harmonies
Similar named colours
Also reads as
B511FF (chemical formula)
- Formula
- 5,561.906 g/mol
- 513 atoms
B511FF has a molar mass of 5,561.906 g/mol, made up of 513 atoms across 2 elements: 511 × B, 2 × F.
Molar mass
Molar mass5,561.906 g/mol
Total atoms per molecule513
Distinct elements2
Mass of one molecule9.2357622 × 10^-21 g
Molecules per gram1.0827477 × 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 × 511)5,523.91 g/mol, 99.317%
Fluorine (F × 2)37.996 g/mol, 0.683%
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