Recognised as Colour

#BB8B81

#BB8B81
Red
Dark
Nearest: Rosy brown

#BB8B81 is a red with RGB values 187, 139, 129 and HSL 10°, 30%, 62%. It is a dark colour, so black text on it reaches 7.1:1 contrast (AAA for normal text). The nearest named colour is Rosy brown.

Colour values

#BB8B81#BB8B81

HEX#BB8B81

RGBrgb(187, 139, 129)

RGB (0–1)0.7333, 0.5451, 0.5059

RGB percentages73.3%, 54.5%, 50.6%

HSLhsl(10.3, 29.9%, 62%)

HSV / HSBhsv(10.3, 31%, 73.3%)

CMYK0%, 25.7%, 31%, 26.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,290,945

CSS custom property--colour: #BB8B81;

Brightness & contrast

Relative luminance0.30615WCAG 2.x, 0 is black and 1 is white

Perceived brightness153.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 7.12:1

Contrast with white2.95:1WCAG normal text: Fail

Contrast with black7.12:1WCAG normal text: AAA

Greyscale equivalent#949494

Inverted#44747E

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#959180no red cones; affects about 1% of men; ΔE 18.8 from the original

Deuteranopia#A19A81no green cones; the most common form, about 1% of men; ΔE 18.7 from the original

Tritanopia#C68588no blue cones; rare, and affects men and women equally; ΔE 9.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text2.95:1WCAG large text: Fail

Contrast with black, large text7.12:1WCAG large text: AAA

Named colours

Rosy brown · ΔE 6.1 Dark salmon · ΔE 20.5 Tan · ΔE 21.1 Dark grey · ΔE 22.1 Gray · ΔE 22.7 Light pink · ΔE 23.1

Nearest named CSS colourRosy brown (#BC8F8F)ΔE 6.06, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#81B1BB

Analogous#BB8194, #BBA881

Triadic#81BB8B, #8B81BB

Split complementary#81BBA8, #8194BB

Tetradic#94BB81, #81B1BB, #A881BB

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#F1E6E4

Lighter +20%#DFC8C3

Lighter +10%#CDA9A2

Darker −10%#A96D60

Darker −20%#8B564B

Darker −30%#6A4239

Darker −40%#492D27

More saturated +25%#D37B69

Less saturated −25%#A39B99

Channel breakdown

R187

G139

B129

Red187 (73.3%)

Green139 (54.5%)

Blue129 (50.6%)

Hue10.34°

Saturation (HSL)29.9%

Lightness61.96%

Dominant channelRed

Hex per channelR BB · G 8B · B 81

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Harmonies

Lighter and darker

Similar named colours

Also reads as

BB8B81 (chemical formula)

Formula
972.9 g/mol
90 atoms

BB8B81 has a molar mass of 972.9 g/mol, made up of 90 atoms across 1 element: 90 × B.

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Molar mass

Molar mass972.9 g/mol

Total atoms per molecule90

Distinct elements1

Mass of one molecule1.6155385 × 10^-21 g

Molecules per gram6.1898867 × 10^20

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 × 90)972.9 g/mol, 100%

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Elements in this formula

Boron

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