Recognised as Colour

#C80037

#C80037
Red
Dark
Nearest: Crimson

#C80037 is a red with RGB values 200, 0, 55 and HSL 344°, 100%, 39%. It is a dark colour, so white text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#C80037#C80037

HEX#C80037

RGBrgb(200, 0, 55)

RGB (0–1)0.7843, 0, 0.2157

RGB percentages78.4%, 0%, 21.6%

HSLhsl(343.5, 100%, 39.2%)

HSV / HSBhsv(343.5, 100%, 78.4%)

CMYK0%, 100%, 72.5%, 21.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,107,255

CSS custom property--colour: #C80037;

Brightness & contrast

Relative luminance0.12555WCAG 2.x, 0 is black and 1 is white

Perceived brightness110.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.98:1

Contrast with white5.98:1WCAG normal text: AA

Contrast with black3.51:1WCAG normal text: Fail

Greyscale equivalent#2E2E2E

Inverted#37FFC8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#504B37no red cones; affects about 1% of men; ΔE 72.2 from the original

Deuteranopia#7D7131no green cones; the most common form, about 1% of men; ΔE 72.3 from the original

Tritanopia#DC0020no blue cones; rare, and affects men and women equally; ΔE 19.4 from the original

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

Contrast with white, large text5.98:1WCAG large text: AAA

Contrast with black, large text3.51:1WCAG large text: AA

Named colours

Crimson · ΔE 7 Firebrick · ΔE 14.6 Brown · ΔE 18.8 Dark red · ΔE 24.8 Indian red · ΔE 26.8 Maroon · ΔE 27.1

Nearest named CSS colourCrimson (#DC143C)ΔE 6.96, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00C891

Analogous#C8009B, #C82D00

Triadic#37C800, #0037C8

Split complementary#00C82D, #009BC8

Tetradic#9BC800, #00C891, #2D00C8

Tints, shades & saturation

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

Lighter +40%#FF95B2

Lighter +30%#FF628D

Lighter +20%#FF2F68

Lighter +10%#FB0045

Darker −10%#950029

Darker −20%#62001B

Darker −30%#2F000D

Darker −40%#000000

More saturated +25%#C80037

Less saturated −25%#AF1942

Channel breakdown

R200

B55

Red200 (78.4%)

Green0 (0%)

Blue55 (21.6%)

Hue343.5°

Saturation (HSL)100%

Lightness39.22%

Dominant channelRed

Hex per channelR C8 · G 00 · B 37

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C80037 (chemical formula)

Formula
961,324.407 g/mol
80037 atoms

C80037 has a molar mass of 961,324.407 g/mol, made up of 80037 atoms across 1 element: 80037 × C.

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Molar mass

Molar mass961,324.407 g/mol

Total atoms per molecule80037

Distinct elements1

Mass of one molecule1.5963167 × 10^-18 g

Molecules per gram6.264421 × 10^17

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%

Carbon (C × 80037)961,324.407 g/mol, 100%

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Elements in this formula

Carbon

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