Recognised as Colour

#B75C47

#B75C47
Red
Dark
Nearest: Sienna

#B75C47 is a red with RGB values 183, 92, 71 and HSL 11°, 44%, 50%. It is a dark colour, so black text on it reaches 4.6:1 contrast (AA for normal text). The nearest named colour is Sienna.

Colour values

#B75C47#B75C47

HEX#B75C47

RGBrgb(183, 92, 71)

RGB (0–1)0.7176, 0.3608, 0.2784

RGB percentages71.8%, 36.1%, 27.8%

HSLhsl(11.2, 44.1%, 49.8%)

HSV / HSBhsv(11.2, 61.2%, 71.8%)

CMYK0%, 49.7%, 61.2%, 28.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,016,711

CSS custom property--colour: #B75C47;

Brightness & contrast

Relative luminance0.18177WCAG 2.x, 0 is black and 1 is white

Perceived brightness124.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.64:1

Contrast with white4.53:1WCAG normal text: AA

Contrast with black4.64:1WCAG normal text: AA

Greyscale equivalent#6E6E6E

Inverted#48A3B8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#736A45no red cones; affects about 1% of men; ΔE 38.3 from the original

Deuteranopia#897E45no green cones; the most common form, about 1% of men; ΔE 39.2 from the original

Tritanopia#C84C57no blue cones; rare, and affects men and women equally; ΔE 17.6 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text4.53:1WCAG large text: AAA

Contrast with black, large text4.64:1WCAG large text: AAA

Named colours

Sienna · ΔE 10.6 Indian red · ΔE 12.5 Saddle brown · ΔE 19.2 Brown · ΔE 19.2 Salmon · ΔE 20.3 Light coral · ΔE 20.5

Nearest named CSS colourSienna (#A0522D)ΔE 10.57, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#47A2B7

Analogous#B7476A, #B79447

Triadic#47B75C, #5C47B7

Split complementary#47B794, #476AB7

Tetradic#6AB747, #47A2B7, #9447B7

Tints, shades & saturation

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

Lighter +40%#F0DEDA

Lighter +30%#E2BDB5

Lighter +20%#D49D90

Lighter +10%#C67C6B

Darker −10%#924A39

Darker −20%#6E372A

Darker −30%#49251C

Darker −40%#24120E

More saturated +25%#D74827

Less saturated −25%#977067

Channel breakdown

R183

G92

B71

Red183 (71.8%)

Green92 (36.1%)

Blue71 (27.8%)

Hue11.25°

Saturation (HSL)44.09%

Lightness49.8%

Dominant channelRed

Hex per channelR B7 · G 5C · B 47

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B75C47 (chemical formula)

Formula
1,375.267 g/mol
122 atoms

B75C47 has a molar mass of 1,375.267 g/mol, made up of 122 atoms across 2 elements: 75 × B, 47 × C.

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Molar mass

Molar mass1,375.267 g/mol

Total atoms per molecule122

Distinct elements2

Mass of one molecule2.2836846 × 10^-21 g

Molecules per gram4.3788884 × 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

B59%

C41%

Boron (B × 75)810.75 g/mol, 58.952%

Carbon (C × 47)564.517 g/mol, 41.048%

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