Recognised as Colour
#B9B1B3
- #B9B1B3
- Grey
- Dark
- Nearest: Dark grey
#B9B1B3 is a grey with RGB values 185, 177, 179 and HSL 345°, 5%, 71%. It is a dark colour, so black text on it reaches 10:1 contrast (AAA for normal text). The nearest named colour is Dark grey.
Colour values
#B9B1B3#B9B1B3
HEX#B9B1B3
RGBrgb(185, 177, 179)
RGB (0–1)0.7255, 0.6941, 0.702
RGB percentages72.5%, 69.4%, 70.2%
HSLhsl(345, 5.4%, 71%)
HSV / HSBhsv(345, 4.3%, 72.5%)
CMYK0%, 4.3%, 3.2%, 27.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,169,651
CSS custom property--colour: #B9B1B3;
Brightness & contrast
Relative luminance0.45013WCAG 2.x, 0 is black and 1 is white
Perceived brightness179.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10:1
Contrast with white2.1:1WCAG normal text: Fail
Contrast with black10:1WCAG normal text: AAA
Greyscale equivalent#B3B3B3
Inverted#464E4C
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.1:1WCAG large text: Fail
Contrast with black, large text10:1WCAG large text: AAA
Named colours
Hue familygrey
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#B1B9B7
Analogous#B9B1B7, #B9B3B1
Triadic#B3B9B1, #B1B3B9
Split complementary#B1B9B3, #B1B7B9
Tetradic#B7B9B1, #B1B9B7, #B3B1B9
Tints, shades & saturation
Channel breakdown
R185
G177
B179
Red185 (72.5%)
Green177 (69.4%)
Blue179 (70.2%)
Hue345°
Saturation (HSL)5.41%
Lightness70.98%
Dominant channelRed
Hex per channelR B9 · G B1 · B B3
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Also reads as
B9B1B3 (chemical formula)
- Formula
- 140.53 g/mol
- 13 atoms
B9B1B3 has a molar mass of 140.53 g/mol, made up of 13 atoms across 1 element: 13 × B.
Molar mass
Molar mass140.53 g/mol
Total atoms per molecule13
Distinct elements1
Mass of one molecule2.3335556 × 10^-22 g
Molecules per gram4.2853062 × 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
B100%
Boron (B × 13)140.53 g/mol, 100%
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