Recognised as Colour

#FC3851

#FC3851
Red
Dark
Nearest: Crimson

#FC3851 is a red with RGB values 252, 56, 81 and HSL 352°, 97%, 60%. It is a dark colour, so black text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FC3851#FC3851

HEX#FC3851

RGBrgb(252, 56, 81)

RGB (0–1)0.9882, 0.2196, 0.3176

RGB percentages98.8%, 22%, 31.8%

HSLhsl(352.3, 97%, 60.4%)

HSV / HSBhsv(352.3, 77.8%, 98.8%)

CMYK0%, 77.8%, 67.9%, 1.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,529,489

CSS custom property--colour: #FC3851;

Brightness & contrast

Relative luminance0.24118WCAG 2.x, 0 is black and 1 is white

Perceived brightness146.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.82:1

Contrast with white3.61:1WCAG normal text: Fail

Contrast with black5.82:1WCAG normal text: AA

Greyscale equivalent#636363

Inverted#03C7AE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#736C50no red cones; affects about 1% of men; ΔE 77.4 from the original

Deuteranopia#A4964Bno green cones; the most common form, about 1% of men; ΔE 78.1 from the original

Tritanopia#FF0043no blue cones; rare, and affects men and women equally; ΔE 10.4 from the original

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

Contrast with white, large text3.61:1WCAG large text: AA

Contrast with black, large text5.82:1WCAG large text: AAA

Named colours

Crimson · ΔE 9.4 Tomato · ΔE 20.4 Firebrick · ΔE 24.3 Brown · ΔE 29.8 Salmon · ΔE 30 Indian red · ΔE 30.4

Nearest named CSS colourCrimson (#DC143C)ΔE 9.35, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#38FCE3

Analogous#FC38B3, #FC8138

Triadic#51FC38, #3851FC

Split complementary#38FC81, #38B3FC

Tetradic#B3FC38, #38FCE3, #8138FC

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FECFD5

Lighter +20%#FE9CA9

Lighter +10%#FD6A7D

Darker −10%#FB0625

Darker −20%#CB031D

Darker −30%#990215

Darker −40%#66020E

More saturated +25%#FF354F

Less saturated −25%#E35164

Channel breakdown

R252

G56

B81

Red252 (98.8%)

Green56 (22%)

Blue81 (31.8%)

Hue352.35°

Saturation (HSL)97.03%

Lightness60.39%

Dominant channelRed

Hex per channelR FC · G 38 · B 51

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FC3851 (chemical formula)

Formula
46,273.359 g/mol
3852 atoms

FC3851 has a molar mass of 46,273.359 g/mol, made up of 3852 atoms across 2 elements: 1 × F, 3851 × C.

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Molar mass

Molar mass46,273.359 g/mol

Total atoms per molecule3852

Distinct elements2

Mass of one molecule7.683872 × 10^-20 g

Molecules per gram1.3014272 × 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

F0%

C100%

Fluorine (F)18.998 g/mol, 0.041%

Carbon (C × 3851)46,254.361 g/mol, 99.959%

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