Recognised as Colour

#FC221C

#FC221C
Red
Dark
Nearest: Red

#FC221C is a red with RGB values 252, 34, 28 and HSL 2°, 97%, 55%. It is a dark colour, so black text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#FC221C#FC221C

HEX#FC221C

RGBrgb(252, 34, 28)

RGB (0–1)0.9882, 0.1333, 0.1098

RGB percentages98.8%, 13.3%, 11%

HSLhsl(1.6, 97.4%, 54.9%)

HSV / HSBhsv(1.6, 88.9%, 98.8%)

CMYK0%, 86.5%, 88.9%, 1.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,523,804

CSS custom property--colour: #FC221C;

Brightness & contrast

Relative luminance0.21923WCAG 2.x, 0 is black and 1 is white

Perceived brightness140.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.38:1

Contrast with white3.9:1WCAG normal text: Fail

Contrast with black5.38:1WCAG normal text: AA

Greyscale equivalent#505050

Inverted#03DDE3

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#706315no red cones; affects about 1% of men; ΔE 82.4 from the original

Deuteranopia#A39101no green cones; the most common form, about 1% of men; ΔE 82.3 from the original

Tritanopia#FF0026no blue cones; rare, and affects men and women equally; ΔE 6.4 from the original

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

Contrast with white, large text3.9:1WCAG large text: AA

Contrast with black, large text5.38:1WCAG large text: AAA

Named colours

Red · ΔE 9.1 Orange red · ΔE 13.4 Tomato · ΔE 23.6 Crimson · ΔE 26.9 Firebrick · ΔE 32.9 Coral · ΔE 35.4

Nearest named CSS colourRed (#FF0000)ΔE 9.13, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1CF6FC

Analogous#FC1C86, #FC921C

Triadic#1CFC22, #221CFC

Split complementary#1CFC92, #1C86FC

Tetradic#86FC1C, #1CF6FC, #921CFC

Tints, shades & saturation

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

Lighter +40%#FFE6E5

Lighter +30%#FEB5B3

Lighter +20%#FD8481

Lighter +10%#FD534E

Darker −10%#E20903

Darker −20%#B00702

Darker −30%#7D0502

Darker −40%#4B0301

More saturated +25%#FF1F19

Less saturated −25%#DF3D39

Channel breakdown

R252

G34

B28

Red252 (98.8%)

Green34 (13.3%)

Blue28 (11%)

Hue1.61°

Saturation (HSL)97.39%

Lightness54.9%

Dominant channelRed

Hex per channelR FC · G 22 · B 1C

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FC221C (chemical formula)

Formula
2,685.44 g/mol
223 atoms

FC221C has a molar mass of 2,685.44 g/mol, made up of 223 atoms across 2 elements: 1 × F, 222 × C.

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Molar mass

Molar mass2,685.44 g/mol

Total atoms per molecule223

Distinct elements2

Mass of one molecule4.459278 × 10^-21 g

Molecules per gram2.2425155 × 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

F0.7%

C99.3%

Fluorine (F)18.998 g/mol, 0.707%

Carbon (C × 222)2,666.442 g/mol, 99.293%

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