Recognised as Colour

#B5B1B6

#B5B1B6
Grey
Dark
Nearest: Dark grey

#B5B1B6 is a grey with RGB values 181, 177, 182 and HSL 288°, 3%, 70%. It is a dark colour, so black text on it reaches 9.9:1 contrast (AAA for normal text). The nearest named colour is Dark grey.

Colour values

#B5B1B6#B5B1B6

HEX#B5B1B6

RGBrgb(181, 177, 182)

RGB (0–1)0.7098, 0.6941, 0.7137

RGB percentages71%, 69.4%, 71.4%

HSLhsl(288, 3.3%, 70.4%)

HSV / HSBhsv(288, 2.7%, 71.4%)

CMYK0.5%, 2.7%, 0%, 28.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,907,510

CSS custom property--colour: #B5B1B6;

Brightness & contrast

Relative luminance0.44645WCAG 2.x, 0 is black and 1 is white

Perceived brightness178.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 9.93:1

Contrast with white2.11:1WCAG normal text: Fail

Contrast with black9.93:1WCAG normal text: AAA

Greyscale equivalent#B2B2B2

Inverted#4A4E49

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#B1B2B6no red cones; affects about 1% of men; ΔE 1.9 from the original

Deuteranopia#B1B2B6no green cones; the most common form, about 1% of men; ΔE 1.9 from the original

Tritanopia#B5B1B3no blue cones; rare, and affects men and women equally; ΔE 1.6 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text2.11:1WCAG large text: Fail

Contrast with black, large text9.93:1WCAG large text: AAA

Named colours

Dark grey · ΔE 4.6 Silver · ΔE 5.9 Light grey · ΔE 12.3 Light steelblue · ΔE 14.8 Thistle · ΔE 15 Gainsboro · ΔE 15.4

Nearest named CSS colourDark grey (#A9A9A9)ΔE 4.62, a close match

Hue familygrey

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#B2B6B1

Analogous#B3B1B6, #B6B1B5

Triadic#B6B5B1, #B1B6B5

Split complementary#B5B6B1, #B1B6B3

Tetradic#B6B3B1, #B2B6B1, #B1B5B6

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#FFFFFF

Lighter +30%#FFFFFF

Lighter +20%#E7E6E7

Lighter +10%#CECBCF

Darker −10%#9C979D

Darker −20%#837C85

Darker −30%#69646A

Darker −40%#4F4B50

More saturated +25%#C09EC9

Less saturated −25%#B3B3B3

Channel breakdown

R181

G177

B182

Red181 (71%)

Green177 (69.4%)

Blue182 (71.4%)

Hue288°

Saturation (HSL)3.31%

Lightness70.39%

Dominant channelBlue

Hex per channelR B5 · G B1 · B B6

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Harmonies

Lighter and darker

Similar named colours

Also reads as

B5B1B6 (chemical formula)

Formula
129.72 g/mol
12 atoms

B5B1B6 has a molar mass of 129.72 g/mol, made up of 12 atoms across 1 element: 12 × B.

Open this reading on its own page →

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

Boron

Nerdulate something else

Nothing in mind? Surprise me · today’s page