Recognised as Colour

#FC4020

#FC4020
Red
Dark
Nearest: Orange red

#FC4020 is a red with RGB values 252, 64, 32 and HSL 9°, 97%, 56%. It is a dark colour, so black text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#FC4020#FC4020

HEX#FC4020

RGBrgb(252, 64, 32)

RGB (0–1)0.9882, 0.251, 0.1255

RGB percentages98.8%, 25.1%, 12.5%

HSLhsl(8.7, 97.3%, 55.7%)

HSV / HSBhsv(8.7, 87.3%, 98.8%)

CMYK0%, 74.6%, 87.3%, 1.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,531,488

CSS custom property--colour: #FC4020;

Brightness & contrast

Relative luminance0.24467WCAG 2.x, 0 is black and 1 is white

Perceived brightness146.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.89:1

Contrast with white3.56:1WCAG normal text: Fail

Contrast with black5.89:1WCAG normal text: AA

Greyscale equivalent#666666

Inverted#03BFDF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#7B6D18no red cones; affects about 1% of men; ΔE 74.9 from the original

Deuteranopia#A9970Fno green cones; the most common form, about 1% of men; ΔE 75.3 from the original

Tritanopia#FF003Bno blue cones; rare, and affects men and women equally; ΔE 20.2 from the original

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

Contrast with white, large text3.56:1WCAG large text: AA

Contrast with black, large text5.89:1WCAG large text: AAA

Named colours

Orange red · ΔE 9.7 Red · ΔE 14.1 Tomato · ΔE 17.9 Crimson · ΔE 27.6 Coral · ΔE 28.4 Firebrick · ΔE 30.7

Nearest named CSS colourOrange red (#FF4500)ΔE 9.7, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#20DCFC

Analogous#FC206E, #FCAE20

Triadic#20FC40, #4020FC

Split complementary#20FCAE, #206EFC

Tetradic#6EFC20, #20DCFC, #AE20FC

Tints, shades & saturation

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

Lighter +40%#FFECE9

Lighter +30%#FEC1B7

Lighter +20%#FD9685

Lighter +10%#FD6B52

Darker −10%#E62403

Darker −20%#B41C02

Darker −30%#811402

Darker −40%#4F0C01

More saturated +25%#FF3E1D

Less saturated −25%#E0543C

Channel breakdown

R252

G64

B32

Red252 (98.8%)

Green64 (25.1%)

Blue32 (12.5%)

Hue8.73°

Saturation (HSL)97.35%

Lightness55.69%

Dominant channelRed

Hex per channelR FC · G 40 · B 20

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FC4020 (chemical formula)

Formula
48,303.218 g/mol
4021 atoms

FC4020 has a molar mass of 48,303.218 g/mol, made up of 4021 atoms across 2 elements: 1 × F, 4020 × C.

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Molar mass

Molar mass48,303.218 g/mol

Total atoms per molecule4021

Distinct elements2

Mass of one molecule8.0209381 × 10^-20 g

Molecules per gram1.246737 × 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, 0.039%

Carbon (C × 4020)48,284.22 g/mol, 99.961%

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Elements in this formula

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