Recognised as Colour

#FF3C47

#FF3C47
Red
Dark
Nearest: Crimson

#FF3C47 is a red with RGB values 255, 60, 71 and HSL 357°, 100%, 62%. It is a dark colour, so black text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FF3C47#FF3C47

HEX#FF3C47

RGBrgb(255, 60, 71)

RGB (0–1)1, 0.2353, 0.2784

RGB percentages100%, 23.5%, 27.8%

HSLhsl(356.6, 100%, 61.8%)

HSV / HSBhsv(356.6, 76.5%, 100%)

CMYK0%, 76.5%, 72.2%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,727,111

CSS custom property--colour: #FF3C47;

Brightness & contrast

Relative luminance0.24947WCAG 2.x, 0 is black and 1 is white

Perceived brightness148.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.99:1

Contrast with white3.51:1WCAG normal text: Fail

Contrast with black5.99:1WCAG normal text: AA

Greyscale equivalent#666666

Inverted#00C3B8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#786E45no red cones; affects about 1% of men; ΔE 77 from the original

Deuteranopia#A89840no green cones; the most common form, about 1% of men; ΔE 77.6 from the original

Tritanopia#FF0042no blue cones; rare, and affects men and women equally; ΔE 9.9 from the original

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

Contrast with white, large text3.51:1WCAG large text: AA

Contrast with black, large text5.99:1WCAG large text: AAA

Named colours

Crimson · ΔE 12.2 Tomato · ΔE 16.2 Firebrick · ΔE 24.2 Red · ΔE 28.1 Orange red · ΔE 28.7 Coral · ΔE 29.4

Nearest named CSS colourCrimson (#DC143C)ΔE 12.23, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#3CFFF4

Analogous#FF3CA8, #FF933C

Triadic#47FF3C, #3C47FF

Split complementary#3CFF93, #3CA8FF

Tetradic#A8FF3C, #3CFFF4, #933CFF

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFD5D7

Lighter +20%#FFA2A7

Lighter +10%#FF6F77

Darker −10%#FF0917

Darker −20%#D5000C

Darker −30%#A20009

Darker −40%#6F0006

More saturated +25%#FF3C47

Less saturated −25%#E7545D

Channel breakdown

R255

G60

B71

Red255 (100%)

Green60 (23.5%)

Blue71 (27.8%)

Hue356.62°

Saturation (HSL)100%

Lightness61.76%

Dominant channelRed

Hex per channelR FF · G 3C · B 47

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF3C47 (chemical formula)

Formula
640.509 g/mol
51 atoms

FF3C47 has a molar mass of 640.509 g/mol, made up of 51 atoms across 2 elements: 4 × F, 47 × C.

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Molar mass

Molar mass640.509 g/mol

Total atoms per molecule51

Distinct elements2

Mass of one molecule1.0635902 × 10^-21 g

Molecules per gram9.4021173 × 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

F11.9%

C88.1%

Fluorine (F × 4)75.992 g/mol, 11.864%

Carbon (C × 47)564.517 g/mol, 88.136%

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