Recognised as Colour

#B5B7B9

#B5B7B9
Grey
Dark
Nearest: Silver

#B5B7B9 is a grey with RGB values 181, 183, 185 and HSL 210°, 3%, 72%. It is a dark colour, so black text on it reaches 10.4:1 contrast (AAA for normal text). The nearest named colour is Silver.

Colour values

#B5B7B9#B5B7B9

HEX#B5B7B9

RGBrgb(181, 183, 185)

RGB (0–1)0.7098, 0.7176, 0.7255

RGB percentages71%, 71.8%, 72.5%

HSLhsl(210, 2.8%, 71.8%)

HSV / HSBhsv(210, 2.2%, 72.5%)

CMYK2.2%, 1.1%, 0%, 27.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,909,049

CSS custom property--colour: #B5B7B9;

Brightness & contrast

Relative luminance0.47194WCAG 2.x, 0 is black and 1 is white

Perceived brightness182.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 10.44:1

Contrast with white2.01:1WCAG normal text: Fail

Contrast with black10.44:1WCAG normal text: AAA

Greyscale equivalent#B7B7B7

Inverted#4A4846

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#B6B7B9no red cones; affects about 1% of men; ΔE 0.4 from the original

Deuteranopia#B6B7B9no green cones; the most common form, about 1% of men; ΔE 0.4 from the original

Tritanopia#B4B7B8no blue cones; rare, and affects men and women equally; ΔE 0.7 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text2.01:1WCAG large text: Fail

Contrast with black, large text10.44:1WCAG large text: AAA

Named colours

Silver · ΔE 3.6 Dark grey · ΔE 5.2 Light grey · ΔE 10.3 Gainsboro · ΔE 13.5 Light steelblue · ΔE 14.6 Thistle · ΔE 16.7

Nearest named CSS colourSilver (#C0C0C0)ΔE 3.63, a close match

Hue familygrey

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#B9B7B5

Analogous#B5B9B9, #B5B5B9

Triadic#B9B5B7, #B7B9B5

Split complementary#B9B5B5, #B9B9B5

Tetradic#B9B5B9, #B9B7B5, #B5B9B5

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFFFFF

Lighter +20%#E9EAEB

Lighter +10%#CFD1D2

Darker −10%#9B9EA0

Darker −20%#818487

Darker −30%#686B6D

Darker −40%#4F5153

More saturated +25%#A3B7CB

Less saturated −25%#B7B7B7

Channel breakdown

R181

G183

B185

Red181 (71%)

Green183 (71.8%)

Blue185 (72.5%)

Hue210°

Saturation (HSL)2.78%

Lightness71.76%

Dominant channelBlue

Hex per channelR B5 · G B7 · B B9

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B5B7B9 (chemical formula)

Formula
227.01 g/mol
21 atoms

B5B7B9 has a molar mass of 227.01 g/mol, made up of 21 atoms across 1 element: 21 × B.

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Molar mass

Molar mass227.01 g/mol

Total atoms per molecule21

Distinct elements1

Mass of one molecule3.7695897 × 10^-22 g

Molecules per gram2.6528086 × 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 × 21)227.01 g/mol, 100%

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Elements in this formula

Boron

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