Recognised as Colour

#FF474F

#FF474F
Red
Dark
Nearest: Crimson

#FF474F is a red with RGB values 255, 71, 79 and HSL 357°, 100%, 64%. It is a dark colour, so black text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FF474F#FF474F

HEX#FF474F

RGBrgb(255, 71, 79)

RGB (0–1)1, 0.2784, 0.3098

RGB percentages100%, 27.8%, 31%

HSLhsl(357.4, 100%, 63.9%)

HSV / HSBhsv(357.4, 72.2%, 100%)

CMYK0%, 72.2%, 69%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,729,935

CSS custom property--colour: #FF474F;

Brightness & contrast

Relative luminance0.26331WCAG 2.x, 0 is black and 1 is white

Perceived brightness152 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.27:1

Contrast with white3.35:1WCAG normal text: Fail

Contrast with black6.27:1WCAG normal text: AA

Greyscale equivalent#6F6F6F

Inverted#00B8B0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#7C734Eno red cones; affects about 1% of men; ΔE 73.8 from the original

Deuteranopia#AA9B49no green cones; the most common form, about 1% of men; ΔE 74.6 from the original

Tritanopia#FF004Cno blue cones; rare, and affects men and women equally; ΔE 14 from the original

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

Contrast with white, large text3.35:1WCAG large text: AA

Contrast with black, large text6.27:1WCAG large text: AAA

Named colours

Crimson · ΔE 12.2 Tomato · ΔE 14.7 Firebrick · ΔE 23.2 Salmon · ΔE 26.7 Coral · ΔE 27.1 Indian red · ΔE 29.1

Nearest named CSS colourCrimson (#DC143C)ΔE 12.18, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#47FFF7

Analogous#FF47AB, #FF9B47

Triadic#4FFF47, #474FFF

Split complementary#47FF9B, #47ABFF

Tetradic#ABFF47, #47FFF7, #9B47FF

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFE0E1

Lighter +20%#FFADB1

Lighter +10%#FF7A80

Darker −10%#FF141E

Darker −20%#E0000A

Darker −30%#AD0008

Darker −40%#7A0005

More saturated +25%#FF474F

Less saturated −25%#E85E64

Channel breakdown

R255

G71

B79

Red255 (100%)

Green71 (27.8%)

Blue79 (31%)

Hue357.39°

Saturation (HSL)100%

Lightness63.92%

Dominant channelRed

Hex per channelR FF · G 47 · B 4F

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF474F (chemical formula)

Formula
9,043.048 g/mol
476 atoms

FF474F has a molar mass of 9,043.048 g/mol, made up of 476 atoms across 1 element: 476 × F.

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Molar mass

Molar mass9,043.048 g/mol

Total atoms per molecule476

Distinct elements1

Mass of one molecule1.5016334 × 10^-20 g

Molecules per gram6.6594148 × 10^19

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

F100%

Fluorine (F × 476)9,043.048 g/mol, 100%

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Elements in this formula

Fluorine

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