Recognised as Colour

#FC1331

#FC1331
Red
Dark
Nearest: Crimson

#FC1331 is a red with RGB values 252, 19, 49 and HSL 352°, 97%, 53%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FC1331#FC1331

HEX#FC1331

RGBrgb(252, 19, 49)

RGB (0–1)0.9882, 0.0745, 0.1922

RGB percentages98.8%, 7.5%, 19.2%

HSLhsl(352.3, 97.5%, 53.1%)

HSV / HSBhsv(352.3, 92.5%, 98.8%)

CMYK0%, 92.5%, 80.6%, 1.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,519,985

CSS custom property--colour: #FC1331;

Brightness & contrast

Relative luminance0.21383WCAG 2.x, 0 is black and 1 is white

Perceived brightness139.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.28:1

Contrast with white3.98:1WCAG normal text: Fail

Contrast with black5.28:1WCAG normal text: AA

Greyscale equivalent#474747

Inverted#03ECCE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6C612Fno red cones; affects about 1% of men; ΔE 84.4 from the original

Deuteranopia#A19025no green cones; the most common form, about 1% of men; ΔE 84.4 from the original

Tritanopia#FF0025no blue cones; rare, and affects men and women equally; ΔE 6.6 from the original

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

Contrast with white, large text3.98:1WCAG large text: AA

Contrast with black, large text5.28:1WCAG large text: AAA

Named colours

Crimson · ΔE 18 Red · ΔE 18.7 Tomato · ΔE 22.6 Orange red · ΔE 23.4 Firebrick · ΔE 28.9 Coral · ΔE 36

Nearest named CSS colourCrimson (#DC143C)ΔE 17.97, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#13FCDE

Analogous#FC13A6, #FC6A13

Triadic#31FC13, #1331FC

Split complementary#13FC6A, #13A6FC

Tetradic#A5FC13, #13FCDE, #6913FC

Tints, shades & saturation

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

Lighter +40%#FFDCE1

Lighter +30%#FEAAB5

Lighter +20%#FD7889

Lighter +10%#FD455D

Darker −10%#D9031E

Darker −20%#A70217

Darker −30%#750110

Darker −40%#420109

More saturated +25%#FF102F

Less saturated −25%#DE3147

Channel breakdown

R252

G19

B49

Red252 (98.8%)

Green19 (7.5%)

Blue49 (19.2%)

Hue352.27°

Saturation (HSL)97.49%

Lightness53.14%

Dominant channelRed

Hex per channelR FC · G 13 · B 31

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FC1331 (chemical formula)

Formula
16,005.639 g/mol
1332 atoms

FC1331 has a molar mass of 16,005.639 g/mol, made up of 1332 atoms across 2 elements: 1 × F, 1331 × C.

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Molar mass

Molar mass16,005.639 g/mol

Total atoms per molecule1332

Distinct elements2

Mass of one molecule2.6577989 × 10^-20 g

Molecules per gram3.7625119 × 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

F0.1%

C99.9%

Fluorine (F)18.998 g/mol, 0.119%

Carbon (C × 1331)15,986.641 g/mol, 99.881%

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