Recognised as Colour

#BF1F55

#BF1F55
Red
Dark
Nearest: Indian red

#BF1F55 is a red with RGB values 191, 31, 85 and HSL 340°, 72%, 44%. It is a dark colour, so white text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Indian red.

Colour values

#BF1F55#BF1F55

HEX#BF1F55

RGBrgb(191, 31, 85)

RGB (0–1)0.749, 0.1216, 0.3333

RGB percentages74.9%, 12.2%, 33.3%

HSLhsl(339.8, 72.1%, 43.5%)

HSV / HSBhsv(339.8, 83.8%, 74.9%)

CMYK0%, 83.8%, 55.5%, 25.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,525,397

CSS custom property--colour: #BF1F55;

Brightness & contrast

Relative luminance0.12712WCAG 2.x, 0 is black and 1 is white

Perceived brightness110.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.93:1

Contrast with white5.93:1WCAG normal text: AA

Contrast with black3.54:1WCAG normal text: Fail

Greyscale equivalent#454545

Inverted#40E0AA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4D5056no red cones; affects about 1% of men; ΔE 65 from the original

Deuteranopia#766F51no green cones; the most common form, about 1% of men; ΔE 65.8 from the original

Tritanopia#D10038no blue cones; rare, and affects men and women equally; ΔE 22.2 from the original

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

Contrast with white, large text5.93:1WCAG large text: AAA

Contrast with black, large text3.54:1WCAG large text: AA

Named colours

Indian red · ΔE 24 Brown · ΔE 24.1 Crimson · ΔE 24.5 Pale violetred · ΔE 27.3 Medium violet red · ΔE 27.4 Firebrick · ΔE 27.8

Nearest named CSS colourIndian red (#CD5C5C)ΔE 23.97, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1FBF89

Analogous#BF1FA5, #BF391F

Triadic#55BF1F, #1F55BF

Split complementary#1FBF39, #1FA5BF

Tetradic#A5BF1F, #1FBF89, #391FBF

Tints, shades & saturation

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

Lighter +40%#F3B7CB

Lighter +30%#EC8BAC

Lighter +20%#E55F8C

Lighter +10%#DE336D

Darker −10%#931841

Darker −20%#67112E

Darker −30%#3B0A1A

Darker −40%#0F0307

More saturated +25%#DB034C

Less saturated −25%#A33B5E

Channel breakdown

R191

G31

B85

Red191 (74.9%)

Green31 (12.2%)

Blue85 (33.3%)

Hue339.75°

Saturation (HSL)72.07%

Lightness43.53%

Dominant channelRed

Hex per channelR BF · G 1F · B 55

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Harmonies

Lighter and darker

Similar named colours

Also reads as

BF1F55 (chemical formula)

Formula
1,074.698 g/mol
57 atoms

BF1F55 has a molar mass of 1,074.698 g/mol, made up of 57 atoms across 2 elements: 1 × B, 56 × F.

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Molar mass

Molar mass1,074.698 g/mol

Total atoms per molecule57

Distinct elements2

Mass of one molecule1.784578 × 10^-21 g

Molecules per gram5.6035656 × 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

B1%

F99%

Boron (B)10.81 g/mol, 1.006%

Fluorine (F × 56)1,063.888 g/mol, 98.994%

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