Recognised as Colour

#B57966

#B57966
Red
Dark
Nearest: Rosy brown

#B57966 is a red with RGB values 181, 121, 102 and HSL 14°, 35%, 55%. It is a dark colour, so black text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Rosy brown.

Colour values

#B57966#B57966

HEX#B57966

RGBrgb(181, 121, 102)

RGB (0–1)0.7098, 0.4745, 0.4

RGB percentages71%, 47.5%, 40%

HSLhsl(14.4, 34.8%, 55.5%)

HSV / HSBhsv(14.4, 43.6%, 71%)

CMYK0%, 33.1%, 43.6%, 29%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,893,094

CSS custom property--colour: #B57966;

Brightness & contrast

Relative luminance0.24458WCAG 2.x, 0 is black and 1 is white

Perceived brightness139.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.89:1

Contrast with white3.56:1WCAG normal text: Fail

Contrast with black5.89:1WCAG normal text: AA

Greyscale equivalent#848484

Inverted#4A8699

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#888065no red cones; affects about 1% of men; ΔE 23.3 from the original

Deuteranopia#968D65no green cones; the most common form, about 1% of men; ΔE 24.4 from the original

Tritanopia#C27074no blue cones; rare, and affects men and women equally; ΔE 14.1 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text3.56:1WCAG large text: AA

Contrast with black, large text5.89:1WCAG large text: AAA

Named colours

Rosy brown · ΔE 15.7 Dark salmon · ΔE 16.9 Sienna · ΔE 21.8 Light coral · ΔE 23.7 Indian red · ΔE 24 Tan · ΔE 24.9

Nearest named CSS colourRosy brown (#BC8F8F)ΔE 15.68, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#66A2B5

Analogous#B5667A, #B5A166

Triadic#66B579, #7966B5

Split complementary#66B5A1, #667AB5

Tetradic#7AB566, #66A2B5, #A166B5

Tints, shades & saturation

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

Lighter +40%#F8F1EF

Lighter +30%#E7D3CD

Lighter +20%#D6B5AB

Lighter +10%#C69788

Darker −10%#9C5F4C

Darker −20%#7A4A3B

Darker −30%#58352A

Darker −40%#35201A

More saturated +25%#D16A4A

Less saturated −25%#998882

Channel breakdown

R181

G121

B102

Red181 (71%)

Green121 (47.5%)

Blue102 (40%)

Hue14.43°

Saturation (HSL)34.8%

Lightness55.49%

Dominant channelRed

Hex per channelR B5 · G 79 · B 66

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B57966 (chemical formula)

Formula
626,612.46 g/mol
57966 atoms

B57966 has a molar mass of 626,612.46 g/mol, made up of 57966 atoms across 1 element: 57966 × B.

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Molar mass

Molar mass626,612.46 g/mol

Total atoms per molecule57966

Distinct elements1

Mass of one molecule1.0405145 × 10^-18 g

Molecules per gram9.6106304 × 10^17

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 × 57966)626,612.46 g/mol, 100%

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Elements in this formula

Boron

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