Recognised as Colour

#B75742

#B75742
Red
Dark
Nearest: Sienna

#B75742 is a red with RGB values 183, 87, 66 and HSL 11°, 47%, 49%. It is a dark colour, so white text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Sienna.

Colour values

#B75742#B75742

HEX#B75742

RGBrgb(183, 87, 66)

RGB (0–1)0.7176, 0.3412, 0.2588

RGB percentages71.8%, 34.1%, 25.9%

HSLhsl(10.8, 47%, 48.8%)

HSV / HSBhsv(10.8, 63.9%, 71.8%)

CMYK0%, 52.5%, 63.9%, 28.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,015,426

CSS custom property--colour: #B75742;

Brightness & contrast

Relative luminance0.17277WCAG 2.x, 0 is black and 1 is white

Perceived brightness122.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.71:1

Contrast with white4.71:1WCAG normal text: AA

Contrast with black4.46:1WCAG normal text: Fail

Greyscale equivalent#6A6A6A

Inverted#48A8BD

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#706740no red cones; affects about 1% of men; ΔE 40.8 from the original

Deuteranopia#877B40no green cones; the most common form, about 1% of men; ΔE 41.2 from the original

Tritanopia#C84552no blue cones; rare, and affects men and women equally; ΔE 18.1 from the original

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

Contrast with white, large text4.71:1WCAG large text: AAA

Contrast with black, large text4.46:1WCAG large text: AA

Named colours

Sienna · ΔE 10.6 Indian red · ΔE 12.2 Brown · ΔE 16.7 Saddle brown · ΔE 18.7 Salmon · ΔE 20.4 Light coral · ΔE 21.4

Nearest named CSS colourSienna (#A0522D)ΔE 10.6, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#42A2B7

Analogous#B74267, #B79242

Triadic#42B757, #5742B7

Split complementary#42B791, #4268B7

Tetradic#68B742, #42A2B7, #9142B7

Tints, shades & saturation

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

Lighter +40%#F0DAD5

Lighter +30%#E2B9B0

Lighter +20%#D5988A

Lighter +10%#C77665

Darker −10%#924534

Darker −20%#6C3327

Darker −30%#472219

Darker −40%#21100C

More saturated +25%#D64323

Less saturated −25%#986B61

Channel breakdown

R183

G87

B66

Red183 (71.8%)

Green87 (34.1%)

Blue66 (25.9%)

Hue10.77°

Saturation (HSL)46.99%

Lightness48.82%

Dominant channelRed

Hex per channelR B7 · G 57 · B 42

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B75742 (chemical formula)

Formula
818,771.02 g/mol
75742 atoms

B75742 has a molar mass of 818,771.02 g/mol, made up of 75742 atoms across 1 element: 75742 × B.

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Molar mass

Molar mass818,771.02 g/mol

Total atoms per molecule75742

Distinct elements1

Mass of one molecule1.3596013 × 10^-18 g

Molecules per gram7.3550976 × 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 × 75742)818,771.02 g/mol, 100%

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Elements in this formula

Boron

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