Recognised as Colour

#B72957

#B72957
Red
Dark
Nearest: Indian red

#B72957 is a red with RGB values 183, 41, 87 and HSL 341°, 63%, 44%. It is a dark colour, so white text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Indian red.

Colour values

#B72957#B72957

HEX#B72957

RGBrgb(183, 41, 87)

RGB (0–1)0.7176, 0.1608, 0.3412

RGB percentages71.8%, 16.1%, 34.1%

HSLhsl(340.6, 63.4%, 43.9%)

HSV / HSBhsv(340.6, 77.6%, 71.8%)

CMYK0%, 77.6%, 52.5%, 28.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,003,671

CSS custom property--colour: #B72957;

Brightness & contrast

Relative luminance0.12341WCAG 2.x, 0 is black and 1 is white

Perceived brightness108.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.05:1

Contrast with white6.05:1WCAG normal text: AA

Contrast with black3.47:1WCAG normal text: Fail

Greyscale equivalent#4B4B4B

Inverted#48D6A8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4E5058no red cones; affects about 1% of men; ΔE 59.3 from the original

Deuteranopia#736D54no green cones; the most common form, about 1% of men; ΔE 60.7 from the original

Tritanopia#C8003Dno blue cones; rare, and affects men and women equally; ΔE 20.1 from the original

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

Contrast with white, large text6.05:1WCAG large text: AAA

Contrast with black, large text3.47:1WCAG large text: AA

Named colours

Indian red · ΔE 22.3 Brown · ΔE 23.9 Pale violetred · ΔE 24.2 Medium violet red · ΔE 27.2 Crimson · ΔE 28.5 Firebrick · ΔE 29.2

Nearest named CSS colourIndian red (#CD5C5C)ΔE 22.29, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#29B789

Analogous#B7299E, #B74229

Triadic#57B729, #2957B7

Split complementary#29B742, #299EB7

Tetradic#9EB729, #29B789, #4229B7

Tints, shades & saturation

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

Lighter +40%#F0BCCD

Lighter +30%#E792AE

Lighter +20%#DD698E

Lighter +10%#D43F6F

Darker −10%#8D2043

Darker −20%#64162F

Darker −30%#3A0D1C

Darker −40%#100408

More saturated +25%#D30D4D

Less saturated −25%#9B4561

Channel breakdown

R183

G41

B87

Red183 (71.8%)

Green41 (16.1%)

Blue87 (34.1%)

Hue340.56°

Saturation (HSL)63.39%

Lightness43.92%

Dominant channelRed

Hex per channelR B7 · G 29 · B 57

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B72957 (chemical formula)

Formula
788,665.17 g/mol
72957 atoms

B72957 has a molar mass of 788,665.17 g/mol, made up of 72957 atoms across 1 element: 72957 × B.

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Molar mass

Molar mass788,665.17 g/mol

Total atoms per molecule72957

Distinct elements1

Mass of one molecule1.3096093 × 10^-18 g

Molecules per gram7.635865 × 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 × 72957)788,665.17 g/mol, 100%

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Elements in this formula

Boron

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