Recognised as Colour

#C9003F

#C9003F
Red
Dark
Nearest: Crimson

#C9003F is a red with RGB values 201, 0, 63 and HSL 341°, 100%, 39%. It is a dark colour, so white text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#C9003F#C9003F

HEX#C9003F

RGBrgb(201, 0, 63)

RGB (0–1)0.7882, 0, 0.2471

RGB percentages78.8%, 0%, 24.7%

HSLhsl(341.2, 100%, 39.4%)

HSV / HSBhsv(341.2, 100%, 78.8%)

CMYK0%, 100%, 68.7%, 21.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,172,799

CSS custom property--colour: #C9003F;

Brightness & contrast

Relative luminance0.12776WCAG 2.x, 0 is black and 1 is white

Perceived brightness111.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.91:1

Contrast with white5.91:1WCAG normal text: AA

Contrast with black3.56:1WCAG normal text: Fail

Greyscale equivalent#2F2F2F

Inverted#36FFC0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4F4C3Fno red cones; affects about 1% of men; ΔE 72.5 from the original

Deuteranopia#7C7139no green cones; the most common form, about 1% of men; ΔE 72.7 from the original

Tritanopia#DD0024no blue cones; rare, and affects men and women equally; ΔE 22 from the original

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

Contrast with white, large text5.91:1WCAG large text: AAA

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

Named colours

Crimson · ΔE 9.8 Firebrick · ΔE 17.9 Brown · ΔE 20.1 Indian red · ΔE 26.2 Dark red · ΔE 27.7 Maroon · ΔE 29.4

Nearest named CSS colourCrimson (#DC143C)ΔE 9.84, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00C98A

Analogous#C900A3, #C92600

Triadic#3FC900, #003FC9

Split complementary#00C926, #00A3C9

Tetradic#A3C900, #00C98A, #2600C9

Tints, shades & saturation

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

Lighter +40%#FF96B7

Lighter +30%#FF6394

Lighter +20%#FF3071

Lighter +10%#FC004F

Darker −10%#96002F

Darker −20%#63001F

Darker −30%#30000F

Darker −40%#000000

More saturated +25%#C9003F

Less saturated −25%#B01948

Channel breakdown

R201

B63

Red201 (78.8%)

Green0 (0%)

Blue63 (24.7%)

Hue341.19°

Saturation (HSL)100%

Lightness39.41%

Dominant channelRed

Hex per channelR C9 · G 00 · B 3F

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C9003F (chemical formula)

Formula
108,154.031 g/mol
9004 atoms

C9003F has a molar mass of 108,154.031 g/mol, made up of 9004 atoms across 2 elements: 9003 × C, 1 × F.

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Molar mass

Molar mass108,154.031 g/mol

Total atoms per molecule9004

Distinct elements2

Mass of one molecule1.7959399 × 10^-19 g

Molecules per gram5.5681149 × 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

C100%

F0%

Carbon (C × 9003)108,135.033 g/mol, 99.982%

Fluorine (F)18.998 g/mol, 0.018%

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