Recognised as Colour

#BF4557

#BF4557
Red
Dark
Nearest: Indian red

#BF4557 is a red with RGB values 191, 69, 87 and HSL 351°, 49%, 51%. It is a dark colour, so white text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Indian red.

Colour values

#BF4557#BF4557

HEX#BF4557

RGBrgb(191, 69, 87)

RGB (0–1)0.749, 0.2706, 0.3412

RGB percentages74.9%, 27.1%, 34.1%

HSLhsl(351.1, 48.8%, 51%)

HSV / HSBhsv(351.1, 63.9%, 74.9%)

CMYK0%, 63.9%, 54.5%, 25.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,535,127

CSS custom property--colour: #BF4557;

Brightness & contrast

Relative luminance0.16021WCAG 2.x, 0 is black and 1 is white

Perceived brightness120.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5:1

Contrast with white5:1WCAG normal text: AA

Contrast with black4.2:1WCAG normal text: Fail

Greyscale equivalent#606060

Inverted#40BAA8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#626057no red cones; affects about 1% of men; ΔE 52.7 from the original

Deuteranopia#817954no green cones; the most common form, about 1% of men; ΔE 53.6 from the original

Tritanopia#D02F4Cno blue cones; rare, and affects men and women equally; ΔE 14.4 from the original

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

Contrast with white, large text5:1WCAG large text: AAA

Contrast with black, large text4.2:1WCAG large text: AA

Named colours

Indian red · ΔE 10.3 Brown · ΔE 17.3 Light coral · ΔE 20.8 Pale violetred · ΔE 21.3 Firebrick · ΔE 23.6 Salmon · ΔE 24.6

Nearest named CSS colourIndian red (#CD5C5C)ΔE 10.28, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#45BFAD

Analogous#BF4594, #BF7045

Triadic#57BF45, #4557BF

Split complementary#45BF70, #4594BF

Tetradic#94BF45, #45BFAD, #7045BF

Tints, shades & saturation

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

Lighter +40%#F3DDE0

Lighter +30%#E6B7BE

Lighter +20%#D9919C

Lighter +10%#CC6B79

Darker −10%#9B3645

Darker −20%#762834

Darker −30%#501B23

Darker −40%#2A0E12

More saturated +25%#DE2641

Less saturated −25%#A0646D

Channel breakdown

R191

G69

B87

Red191 (74.9%)

Green69 (27.1%)

Blue87 (34.1%)

Hue351.15°

Saturation (HSL)48.8%

Lightness50.98%

Dominant channelRed

Hex per channelR BF · G 45 · B 57

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Harmonies

Lighter and darker

Similar named colours

Also reads as

BF4557 (chemical formula)

Formula
86,584.696 g/mol
4558 atoms

BF4557 has a molar mass of 86,584.696 g/mol, made up of 4558 atoms across 2 elements: 1 × B, 4557 × F.

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Molar mass

Molar mass86,584.696 g/mol

Total atoms per molecule4558

Distinct elements2

Mass of one molecule1.4377727 × 10^-19 g

Molecules per gram6.9552023 × 10^18

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

B0%

F100%

Boron (B)10.81 g/mol, 0.012%

Fluorine (F × 4557)86,573.886 g/mol, 99.988%

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