Recognised as Colour
#B7B1B4
- #B7B1B4
- Grey
- Dark
- Nearest: Dark grey
#B7B1B4 is a grey with RGB values 183, 177, 180 and HSL 330°, 4%, 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
#B7B1B4#B7B1B4
HEX#B7B1B4
RGBrgb(183, 177, 180)
RGB (0–1)0.7176, 0.6941, 0.7059
RGB percentages71.8%, 69.4%, 70.6%
HSLhsl(330, 4%, 70.6%)
HSV / HSBhsv(330, 3.3%, 71.8%)
CMYK0%, 3.3%, 1.6%, 28.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,038,580
CSS custom property--colour: #B7B1B4;
Brightness & contrast
Relative luminance0.44807WCAG 2.x, 0 is black and 1 is white
Perceived brightness179.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.96:1
Contrast with white2.11:1WCAG normal text: Fail
Contrast with black9.96:1WCAG normal text: AAA
Greyscale equivalent#B2B2B2
Inverted#484E4B
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.11:1WCAG large text: Fail
Contrast with black, large text9.96:1WCAG large text: AAA
Named colours
Hue familygrey
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#B1B7B4
Analogous#B7B1B7, #B7B1B1
Triadic#B4B7B1, #B1B4B7
Split complementary#B1B7B1, #B1B7B7
Tetradic#B7B7B1, #B1B7B4, #B1B1B7
Tints, shades & saturation
Channel breakdown
R183
G177
B180
Red183 (71.8%)
Green177 (69.4%)
Blue180 (70.6%)
Hue330°
Saturation (HSL)4%
Lightness70.59%
Dominant channelRed
Hex per channelR B7 · G B1 · B B4
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Also reads as
B7B1B4 (chemical formula)
- Formula
- 129.72 g/mol
- 12 atoms
B7B1B4 has a molar mass of 129.72 g/mol, made up of 12 atoms across 1 element: 12 × B.
Molar mass
Molar mass129.72 g/mol
Total atoms per molecule12
Distinct elements1
Mass of one molecule2.1540513 × 10^-22 g
Molecules per gram4.642415 × 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 × 12)129.72 g/mol, 100%
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Elements in this formula
Nerdulate something else
Nothing in mind? Surprise me · today’s page