Recognised as Colour
#B291FB
- #B291FB
- Violet
- Dark
- Nearest: Medium purple
#B291FB is a violet with RGB values 178, 145, 251 and HSL 259°, 93%, 78%. It is a dark colour, so black text on it reaches 8.3:1 contrast (AAA for normal text). The nearest named colour is Medium purple.
Colour values
#B291FB#B291FB
HEX#B291FB
RGBrgb(178, 145, 251)
RGB (0–1)0.698, 0.5686, 0.9843
RGB percentages69.8%, 56.9%, 98.4%
HSLhsl(258.7, 93%, 77.6%)
HSV / HSBhsv(258.7, 42.2%, 98.4%)
CMYK29.1%, 42.2%, 0%, 1.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,702,779
CSS custom property--colour: #B291FB;
Brightness & contrast
Relative luminance0.36681WCAG 2.x, 0 is black and 1 is white
Perceived brightness170.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.34:1
Contrast with white2.52:1WCAG normal text: Fail
Contrast with black8.34:1WCAG normal text: AAA
Greyscale equivalent#A0A0A0
Inverted#4D6E04
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.52:1WCAG large text: Fail
Contrast with black, large text8.34:1WCAG large text: AAA
Named colours
Hue familyviolet
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#DAFB91
Analogous#91A5FB, #E791FB
Triadic#FBB291, #91FBB2
Split complementary#FBE791, #A5FB91
Tetradic#FB91A5, #DAFB91, #91FBE7
Tints, shades & saturation
Channel breakdown
R178
G145
B251
Red178 (69.8%)
Green145 (56.9%)
Blue251 (98.4%)
Hue258.68°
Saturation (HSL)92.98%
Lightness77.65%
Dominant channelBlue
Hex per channelR B2 · G 91 · B FB
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Harmonies
Similar named colours
Also reads as
B291FB (chemical formula)
- Formula
- 3,175.518 g/mol
- 293 atoms
B291FB has a molar mass of 3,175.518 g/mol, made up of 293 atoms across 2 elements: 292 × B, 1 × F.
Molar mass
Molar mass3,175.518 g/mol
Total atoms per molecule293
Distinct elements2
Mass of one molecule5.2730717 × 10^-21 g
Molecules per gram1.8964278 × 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
B99.4%
F0.6%
Boron (B × 292)3,156.52 g/mol, 99.402%
Fluorine (F)18.998 g/mol, 0.598%
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