Recognised as Colour
#B1ACBB
- #B1ACBB
- Violet
- Dark
- Nearest: Dark grey
#B1ACBB is a violet with RGB values 177, 172, 187 and HSL 260°, 10%, 70%. It is a dark colour, so black text on it reaches 9.5:1 contrast (AAA for normal text). The nearest named colour is Dark grey.
Colour values
#B1ACBB#B1ACBB
HEX#B1ACBB
RGBrgb(177, 172, 187)
RGB (0–1)0.6941, 0.6745, 0.7333
RGB percentages69.4%, 67.5%, 73.3%
HSLhsl(260, 9.9%, 70.4%)
HSV / HSBhsv(260, 8%, 73.3%)
CMYK5.3%, 8%, 0%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,644,091
CSS custom property--colour: #B1ACBB;
Brightness & contrast
Relative luminance0.4244WCAG 2.x, 0 is black and 1 is white
Perceived brightness175.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.49:1
Contrast with white2.21:1WCAG normal text: Fail
Contrast with black9.49:1WCAG normal text: AAA
Greyscale equivalent#AEAEAE
Inverted#4E5344
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.21:1WCAG large text: Fail
Contrast with black, large text9.49:1WCAG large text: AAA
Named colours
Hue familyviolet
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#B6BBAC
Analogous#ACAFBB, #B9ACBB
Triadic#BBB1AC, #ACBBB1
Split complementary#BBB9AC, #AFBBAC
Tetradic#BBACAF, #B6BBAC, #ACBBB9
Tints, shades & saturation
Channel breakdown
R177
G172
B187
Red177 (69.4%)
Green172 (67.5%)
Blue187 (73.3%)
Hue260°
Saturation (HSL)9.93%
Lightness70.39%
Dominant channelBlue
Hex per channelR B1 · G AC · B BB
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Also reads as
B1AcBB (chemical formula)
- Formula
- 259.43 g/mol
- 4 atoms
B1AcBB has a molar mass of 259.43 g/mol, made up of 4 atoms across 2 elements: 3 × B, 1 × Ac.
Molar mass
Molar mass259.43 g/mol
Total atoms per molecule4
Distinct elements2
Mass of one molecule4.3079365 × 10^-22 g
Molecules per gram2.321297 × 10^21
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
B12.5%
Ac87.5%
Boron (B × 3)32.43 g/mol, 12.5%
Actinium (Ac)227 g/mol, 87.5%
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