Recognised as Colour

#F20525

#F20525
Red
Dark
Nearest: Red

#F20525 is a red with RGB values 242, 5, 37 and HSL 352°, 96%, 48%. It is a dark colour, so black text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#F20525#F20525

HEX#F20525

RGBrgb(242, 5, 37)

RGB (0–1)0.949, 0.0196, 0.1451

RGB percentages94.9%, 2%, 14.5%

HSLhsl(351.9, 96%, 48.4%)

HSV / HSBhsv(351.9, 97.9%, 94.9%)

CMYK0%, 97.9%, 84.7%, 5.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer15,861,029

CSS custom property--colour: #F20525;

Brightness & contrast

Relative luminance0.19119WCAG 2.x, 0 is black and 1 is white

Perceived brightness133 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.82:1

Contrast with white4.35:1WCAG normal text: Fail

Contrast with black4.82:1WCAG normal text: AA

Greyscale equivalent#3A3A3A

Inverted#0DFADA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#665B22no red cones; affects about 1% of men; ΔE 83.2 from the original

Deuteranopia#9A8915no green cones; the most common form, about 1% of men; ΔE 82.8 from the original

Tritanopia#FF001Bno blue cones; rare, and affects men and women equally; ΔE 8.7 from the original

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

Contrast with white, large text4.35:1WCAG large text: AA

Contrast with black, large text4.82:1WCAG large text: AAA

Named colours

Red · ΔE 16 Crimson · ΔE 19.5 Orange red · ΔE 20.7 Tomato · ΔE 22.9 Firebrick · ΔE 27.9 Coral · ΔE 36

Nearest named CSS colourRed (#FF0000)ΔE 16, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#05F2D2

Analogous#F2059C, #F25C05

Triadic#25F205, #0525F2

Split complementary#05F25C, #059CF2

Tetradic#9BF205, #05F2D2, #5B05F2

Tints, shades & saturation

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

Lighter +40%#FEC5CD

Lighter +30%#FD93A1

Lighter +20%#FC6176

Lighter +10%#FB2F4B

Darker −10%#C0041D

Darker −20%#8E0316

Darker −30%#5C020E

Darker −40%#2A0106

More saturated +25%#F70021

Less saturated −25%#D3243C

Channel breakdown

R242

B37

Red242 (94.9%)

Green5 (2%)

Blue37 (14.5%)

Hue351.9°

Saturation (HSL)95.95%

Lightness48.43%

Dominant channelRed

Hex per channelR F2 · G 05 · B 25

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Harmonies

Lighter and darker

Similar named colours

Also reads as

F20525 (chemical formula)

Formula
389,933.95 g/mol
20525 atoms

F20525 has a molar mass of 389,933.95 g/mol, made up of 20525 atoms across 1 element: 20525 × F.

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Molar mass

Molar mass389,933.95 g/mol

Total atoms per molecule20525

Distinct elements1

Mass of one molecule6.4750056 × 10^-19 g

Molecules per gram1.5444002 × 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 × 20525)389,933.95 g/mol, 100%

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Elements in this formula

Fluorine

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