Recognised as Colour
#B7B3B7
- #B7B3B7
- Grey
- Dark
- Nearest: Dark grey
#B7B3B7 is a grey with RGB values 183, 179, 183 and HSL 300°, 3%, 71%. It is a dark colour, so black text on it reaches 10.1:1 contrast (AAA for normal text). The nearest named colour is Dark grey.
Colour values
#B7B3B7#B7B3B7
HEX#B7B3B7
RGBrgb(183, 179, 183)
RGB (0–1)0.7176, 0.702, 0.7176
RGB percentages71.8%, 70.2%, 71.8%
HSLhsl(300, 2.7%, 71%)
HSV / HSBhsv(300, 2.2%, 71.8%)
CMYK0%, 2.2%, 0%, 28.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,039,095
CSS custom property--colour: #B7B3B7;
Brightness & contrast
Relative luminance0.45726WCAG 2.x, 0 is black and 1 is white
Perceived brightness180.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.15:1
Contrast with white2.07:1WCAG normal text: Fail
Contrast with black10.15:1WCAG normal text: AAA
Greyscale equivalent#B4B4B4
Inverted#484C48
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.07:1WCAG large text: Fail
Contrast with black, large text10.15:1WCAG large text: AAA
Named colours
Hue familygrey
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#B3B7B3
Analogous#B5B3B7, #B7B3B5
Triadic#B7B7B3, #B3B7B7
Split complementary#B5B7B3, #B3B7B5
Tetradic#B7B5B3, #B3B7B3, #B3B5B7
Tints, shades & saturation
Channel breakdown
R183
G179
B183
Red183 (71.8%)
Green179 (70.2%)
Blue183 (71.8%)
Hue300°
Saturation (HSL)2.7%
Lightness70.98%
Dominant channelRed and Blue
Hex per channelR B7 · G B3 · B B7
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Also reads as
B7B3B7 (chemical formula)
- Formula
- 183.77 g/mol
- 17 atoms
B7B3B7 has a molar mass of 183.77 g/mol, made up of 17 atoms across 1 element: 17 × B.
Molar mass
Molar mass183.77 g/mol
Total atoms per molecule17
Distinct elements1
Mass of one molecule3.0515726 × 10^-22 g
Molecules per gram3.2769988 × 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 × 17)183.77 g/mol, 100%
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