Recognised as Colour

#F41B57

#F41B57
Red
Dark
Nearest: Crimson

#F41B57 is a red with RGB values 244, 27, 87 and HSL 343°, 91%, 53%. It is a dark colour, so black text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#F41B57#F41B57

HEX#F41B57

RGBrgb(244, 27, 87)

RGB (0–1)0.9569, 0.1059, 0.3412

RGB percentages95.7%, 10.6%, 34.1%

HSLhsl(343.4, 90.8%, 53.1%)

HSV / HSBhsv(343.4, 88.9%, 95.7%)

CMYK0%, 88.9%, 64.3%, 4.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer15,997,783

CSS custom property--colour: #F41B57;

Brightness & contrast

Relative luminance0.20705WCAG 2.x, 0 is black and 1 is white

Perceived brightness138.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.14:1

Contrast with white4.08:1WCAG normal text: Fail

Contrast with black5.14:1WCAG normal text: AA

Greyscale equivalent#4D4D4D

Inverted#0BE4A8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#656257no red cones; affects about 1% of men; ΔE 81 from the original

Deuteranopia#998D51no green cones; the most common form, about 1% of men; ΔE 81.8 from the original

Tritanopia#FF0039no blue cones; rare, and affects men and women equally; ΔE 19.6 from the original

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

Contrast with white, large text4.08:1WCAG large text: AA

Contrast with black, large text5.14:1WCAG large text: AAA

Named colours

Crimson · ΔE 11.7 Firebrick · ΔE 27.9 Tomato · ΔE 30.1 Brown · ΔE 31.7 Deep pink · ΔE 32.1 Indian red · ΔE 32.4

Nearest named CSS colourCrimson (#DC143C)ΔE 11.7, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1BF4B8

Analogous#F41BC4, #F44C1B

Triadic#57F41B, #1B57F4

Split complementary#1BF44C, #1BC3F4

Tetradic#C3F41B, #1BF4B8, #4B1BF4

Tints, shades & saturation

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

Lighter +40%#FDDEE6

Lighter +30%#FBADC3

Lighter +20%#F97C9F

Lighter +10%#F64C7B

Darker −10%#D20A41

Darker −20%#A10832

Darker −30%#710523

Darker −40%#400314

More saturated +25%#FF1052

Less saturated −25%#D63964

Channel breakdown

R244

G27

B87

Red244 (95.7%)

Green27 (10.6%)

Blue87 (34.1%)

Hue343.41°

Saturation (HSL)90.79%

Lightness53.14%

Dominant channelRed

Hex per channelR F4 · G 1B · B 57

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Harmonies

Lighter and darker

Similar named colours

Also reads as

F41B57 (chemical formula)

Formula
1,395.088 g/mol
98 atoms

F41B57 has a molar mass of 1,395.088 g/mol, made up of 98 atoms across 2 elements: 41 × F, 57 × B.

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Molar mass

Molar mass1,395.088 g/mol

Total atoms per molecule98

Distinct elements2

Mass of one molecule2.3165981 × 10^-21 g

Molecules per gram4.3166745 × 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

F55.8%

B44.2%

Fluorine (F × 41)778.918 g/mol, 55.833%

Boron (B × 57)616.17 g/mol, 44.167%

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