Recognised as Colour

#B1B1CB

#B1B1CB
Blue
Dark
Nearest: Light steelblue

#B1B1CB is a blue with RGB values 177, 177, 203 and HSL 240°, 20%, 75%. It is a dark colour, so black text on it reaches 10:1 contrast (AAA for normal text). The nearest named colour is Light steelblue.

Colour values

#B1B1CB#B1B1CB

HEX#B1B1CB

RGBrgb(177, 177, 203)

RGB (0–1)0.6941, 0.6941, 0.7961

RGB percentages69.4%, 69.4%, 79.6%

HSLhsl(240, 20%, 74.5%)

HSV / HSBhsv(240, 12.8%, 79.6%)

CMYK12.8%, 12.8%, 0%, 20.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,645,387

CSS custom property--colour: #B1B1CB;

Brightness & contrast

Relative luminance0.45103WCAG 2.x, 0 is black and 1 is white

Perceived brightness180.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 10.02:1

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

Contrast with black10.02:1WCAG normal text: AAA

Greyscale equivalent#B3B3B3

Inverted#4E4E34

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#ABB4CCno red cones; affects about 1% of men; ΔE 3.4 from the original

Deuteranopia#AAB2CAno green cones; the most common form, about 1% of men; ΔE 3.1 from the original

Tritanopia#ACB5B9no blue cones; rare, and affects men and women equally; ΔE 12.5 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

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

Contrast with black, large text10.02:1WCAG large text: AAA

Named colours

Light steelblue · ΔE 8.7 Thistle · ΔE 11.4 Dark grey · ΔE 14.6 Silver · ΔE 14.9 Light grey · ΔE 18.3 Light slate grey · ΔE 18.7

Nearest named CSS colourLight steelblue (#B0C4DE)ΔE 8.73, clearly different but related

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#CBCBB1

Analogous#B1BECB, #BEB1CB

Triadic#CBB1B1, #B1CBB1

Split complementary#CBBEB1, #BECBB1

Tetradic#CBB1BE, #CBCBB1, #B1CBBE

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFFFFF

Lighter +20%#EEEEF4

Lighter +10%#D0D0DF

Darker −10%#9292B7

Darker −20%#7474A2

Darker −30%#5B5B88

Darker −40%#46466A

More saturated +25%#A1A1DB

Less saturated −25%#BEBEBE

Channel breakdown

R177

G177

B203

Red177 (69.4%)

Green177 (69.4%)

Blue203 (79.6%)

Hue240°

Saturation (HSL)20%

Lightness74.51%

Dominant channelBlue

Hex per channelR B1 · G B1 · B CB

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B1B1CB (chemical formula)

Formula
44.441 g/mol
4 atoms

B1B1CB has a molar mass of 44.441 g/mol, made up of 4 atoms across 2 elements: 3 × B, 1 × C.

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Molar mass

Molar mass44.441 g/mol

Total atoms per molecule4

Distinct elements2

Mass of one molecule7.3796017 × 10^-23 g

Molecules per gram1.3550867 × 10^22

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

B73%

C27%

Boron (B × 3)32.43 g/mol, 72.973%

Carbon (C)12.011 g/mol, 27.027%

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Elements in this formula

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