Recognised as Colour

#FF4B59

#FF4B59
Red
Dark
Nearest: Crimson

#FF4B59 is a red with RGB values 255, 75, 89 and HSL 355°, 100%, 65%. It is a dark colour, so black text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FF4B59#FF4B59

HEX#FF4B59

RGBrgb(255, 75, 89)

RGB (0–1)1, 0.2941, 0.349

RGB percentages100%, 29.4%, 34.9%

HSLhsl(355.3, 100%, 64.7%)

HSV / HSBhsv(355.3, 70.6%, 100%)

CMYK0%, 70.6%, 65.1%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,730,969

CSS custom property--colour: #FF4B59;

Brightness & contrast

Relative luminance0.27013WCAG 2.x, 0 is black and 1 is white

Perceived brightness153.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.4:1

Contrast with white3.28:1WCAG normal text: Fail

Contrast with black6.4:1WCAG normal text: AA

Greyscale equivalent#727272

Inverted#00B4A6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#7D7658no red cones; affects about 1% of men; ΔE 72.7 from the original

Deuteranopia#AB9C54no green cones; the most common form, about 1% of men; ΔE 72.9 from the original

Tritanopia#FF0652no 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 text3.28:1WCAG large text: AA

Contrast with black, large text6.4:1WCAG large text: AAA

Named colours

Crimson · ΔE 12.3 Tomato · ΔE 17.4 Firebrick · ΔE 23.8 Salmon · ΔE 24.6 Indian red · ΔE 26.2 Brown · ΔE 28.3

Nearest named CSS colourCrimson (#DC143C)ΔE 12.32, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#4BFFF1

Analogous#FF4BB3, #FF974B

Triadic#59FF4B, #4B59FF

Split complementary#4BFF97, #4BB3FF

Tetradic#B3FF4B, #4BFFF1, #974BFF

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFE4E6

Lighter +20%#FFB1B7

Lighter +10%#FF7E88

Darker −10%#FF182A

Darker −20%#E40012

Darker −30%#B1000E

Darker −40%#7E000A

More saturated +25%#FF4B59

Less saturated −25%#E9616C

Channel breakdown

R255

G75

B89

Red255 (100%)

Green75 (29.4%)

Blue89 (34.9%)

Hue355.33°

Saturation (HSL)100%

Lightness64.71%

Dominant channelRed

Hex per channelR FF · G 4B · B 59

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF4B59 (chemical formula)

Formula
732.78 g/mol
64 atoms

FF4B59 has a molar mass of 732.78 g/mol, made up of 64 atoms across 2 elements: 5 × F, 59 × B.

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Molar mass

Molar mass732.78 g/mol

Total atoms per molecule64

Distinct elements2

Mass of one molecule1.2168098 × 10^-21 g

Molecules per gram8.2182111 × 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

F13%

B87%

Fluorine (F × 5)94.99 g/mol, 12.963%

Boron (B × 59)637.79 g/mol, 87.037%

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