Colour

#B57871

#B57871
Red
Dark
Nearest: Rosy brown

#B57871 is a red with RGB values 181, 120, 113 and HSL 6°, 31%, 58%. 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

#B57871#B57871

HEX#B57871

RGBrgb(181, 120, 113)

RGB (0–1)0.7098, 0.4706, 0.4431

RGB percentages71%, 47.1%, 44.3%

HSLhsl(6.2, 31.5%, 57.6%)

HSV / HSBhsv(6.2, 37.6%, 71%)

CMYK0%, 33.7%, 37.6%, 29%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,892,849

CSS custom property--colour: #B57871;

Brightness & contrast

Relative luminance0.24449WCAG 2.x, 0 is black and 1 is white

Perceived brightness140.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.89:1

Contrast with white3.57:1WCAG normal text: Fail

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

Greyscale equivalent#848484

Inverted#4A878E

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#858070no red cones; affects about 1% of men; ΔE 24.6 from the original

Deuteranopia#938C70no green cones; the most common form, about 1% of men; ΔE 25.3 from the original

Tritanopia#C17076no blue cones; rare, and affects men and women equally; ΔE 10.1 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text3.57:1WCAG large text: AA

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

Named colours

Rosy brown · ΔE 11.6 Dark salmon · ΔE 20.1 Light coral · ΔE 22.8 Indian red · ΔE 23.6 Sienna · ΔE 26.2 Pale violetred · ΔE 26.4

Nearest named CSS colourRosy brown (#BC8F8F)ΔE 11.63, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#71AEB5

Analogous#B5718C, #B59A71

Triadic#71B578, #7871B5

Split complementary#71B59A, #718CB5

Tetradic#8CB571, #71AEB5, #9A71B5

Tints, shades & saturation

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

Lighter +40%#FBF8F7

Lighter +30%#E9D8D6

Lighter +20%#D8B8B4

Lighter +10%#C69893

Darker −10%#A05B53

Darker −20%#7E4842

Darker −30%#5D3530

Darker −40%#3B221F

More saturated +25%#D06356

Less saturated −25%#9A8D8C

Channel breakdown

R181

G120

B113

Red181 (71%)

Green120 (47.1%)

Blue113 (44.3%)

Hue6.18°

Saturation (HSL)31.48%

Lightness57.65%

Dominant channelRed

Hex per channelR B5 · G 78 · B 71

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B57871 (chemical formula)

Formula
625,585.51 g/mol
57871 atoms

B57871 has a molar mass of 625,585.51 g/mol, made up of 57871 atoms across 1 element: 57871 × B.

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Molar mass

Molar mass625,585.51 g/mol

Total atoms per molecule57871

Distinct elements1

Mass of one molecule1.0388092 × 10^-18 g

Molecules per gram9.626407 × 10^17

Composition by mass

B100%

Boron (B × 57871)625,585.51 g/mol, 100%

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Elements in this formula

Boron

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