Recognised as Colour

#F20040

#F20040
Red
Dark
Nearest: Crimson

#F20040 is a red with RGB values 242, 0, 64 and HSL 344°, 100%, 47%. It is a dark colour, so black text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#F20040#F20040

HEX#F20040

RGBrgb(242, 0, 64)

RGB (0–1)0.949, 0, 0.251

RGB percentages94.9%, 0%, 25.1%

HSLhsl(344.1, 100%, 47.5%)

HSV / HSBhsv(344.1, 100%, 94.9%)

CMYK0%, 100%, 73.6%, 5.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer15,859,776

CSS custom property--colour: #F20040;

Brightness & contrast

Relative luminance0.19247WCAG 2.x, 0 is black and 1 is white

Perceived brightness134.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.85:1

Contrast with white4.33:1WCAG normal text: Fail

Contrast with black4.85:1WCAG normal text: AA

Greyscale equivalent#383838

Inverted#0DFFBF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#635C40no red cones; affects about 1% of men; ΔE 83.4 from the original

Deuteranopia#988938no green cones; the most common form, about 1% of men; ΔE 83.3 from the original

Tritanopia#FF0026no blue cones; rare, and affects men and women equally; ΔE 17.8 from the original

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

Contrast with white, large text4.33:1WCAG large text: AA

Contrast with black, large text4.85:1WCAG large text: AAA

Named colours

Crimson · ΔE 8.9 Tomato · ΔE 25.1 Firebrick · ΔE 25.2 Red · ΔE 30.4 Brown · ΔE 32.1 Orange red · ΔE 34.3

Nearest named CSS colourCrimson (#DC143C)ΔE 8.9, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00F2B2

Analogous#F200B9, #F23900

Triadic#40F200, #0040F2

Split complementary#00F239, #00B9F2

Tetradic#B9F200, #00F2B2, #3900F2

Tints, shades & saturation

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

Lighter +40%#FFBFD0

Lighter +30%#FF8CAA

Lighter +20%#FF5985

Lighter +10%#FF265F

Darker −10%#BF0033

Darker −20%#8C0025

Darker −30%#590018

Darker −40%#26000A

More saturated +25%#F20040

Less saturated −25%#D41E4E

Channel breakdown

R242

B64

Red242 (94.9%)

Green0 (0%)

Blue64 (25.1%)

Hue344.13°

Saturation (HSL)100%

Lightness47.45%

Dominant channelRed

Hex per channelR F2 · G 00 · B 40

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Harmonies

Lighter and darker

Similar named colours

Also reads as

F20040 (chemical formula)

Formula
380,719.92 g/mol
20040 atoms

F20040 has a molar mass of 380,719.92 g/mol, made up of 20040 atoms across 1 element: 20040 × F.

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Molar mass

Molar mass380,719.92 g/mol

Total atoms per molecule20040

Distinct elements1

Mass of one molecule6.322003 × 10^-19 g

Molecules per gram1.5817772 × 10^18

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

F100%

Fluorine (F × 20040)380,719.92 g/mol, 100%

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Elements in this formula

Fluorine

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