Recognised as Colour

#B75457

#B75457
Red
Dark
Nearest: Indian red

#B75457 is a red with RGB values 183, 84, 87 and HSL 358°, 41%, 52%. It is a dark colour, so white text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Indian red.

Colour values

#B75457#B75457

HEX#B75457

RGBrgb(183, 84, 87)

RGB (0–1)0.7176, 0.3294, 0.3412

RGB percentages71.8%, 32.9%, 34.1%

HSLhsl(358.2, 40.7%, 52.4%)

HSV / HSBhsv(358.2, 54.1%, 71.8%)

CMYK0%, 54.1%, 52.5%, 28.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,014,679

CSS custom property--colour: #B75457;

Brightness & contrast

Relative luminance0.17096WCAG 2.x, 0 is black and 1 is white

Perceived brightness122.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.75:1

Contrast with white4.75:1WCAG normal text: AA

Contrast with black4.42:1WCAG normal text: Fail

Greyscale equivalent#696969

Inverted#48ABA8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6B6656no red cones; affects about 1% of men; ΔE 42.4 from the original

Deuteranopia#837B55no green cones; the most common form, about 1% of men; ΔE 43.8 from the original

Tritanopia#C74556no blue cones; rare, and affects men and women equally; ΔE 12.5 from the original

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

Contrast with white, large text4.75:1WCAG large text: AAA

Contrast with black, large text4.42:1WCAG large text: AA

Named colours

Indian red · ΔE 8 Light coral · ΔE 18 Brown · ΔE 19.2 Sienna · ΔE 21.5 Pale violetred · ΔE 21.8 Salmon · ΔE 22.5

Nearest named CSS colourIndian red (#CD5C5C)ΔE 8, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#54B7B4

Analogous#B75488, #B78354

Triadic#57B754, #5457B7

Split complementary#54B783, #5488B7

Tetradic#89B754, #54B7B4, #8354B7

Tints, shades & saturation

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

Lighter +40%#F3E4E4

Lighter +30%#E4C0C1

Lighter +20%#D59C9E

Lighter +10%#C6787A

Darker −10%#984043

Darker −20%#743133

Darker −30%#502223

Darker −40%#2C1313

More saturated +25%#D5363A

Less saturated −25%#997274

Channel breakdown

R183

G84

B87

Red183 (71.8%)

Green84 (32.9%)

Blue87 (34.1%)

Hue358.18°

Saturation (HSL)40.74%

Lightness52.35%

Dominant channelRed

Hex per channelR B7 · G 54 · B 57

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B75457 (chemical formula)

Formula
815,690.17 g/mol
75457 atoms

B75457 has a molar mass of 815,690.17 g/mol, made up of 75457 atoms across 1 element: 75457 × B.

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Molar mass

Molar mass815,690.17 g/mol

Total atoms per molecule75457

Distinct elements1

Mass of one molecule1.3544854 × 10^-18 g

Molecules per gram7.3828777 × 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 × 75457)815,690.17 g/mol, 100%

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Elements in this formula

Boron

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