Recognised as Colour

#C91237

#C91237
Red
Dark
Nearest: Crimson

#C91237 is a red with RGB values 201, 18, 55 and HSL 348°, 84%, 43%. It is a dark colour, so white text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#C91237#C91237

HEX#C91237

RGBrgb(201, 18, 55)

RGB (0–1)0.7882, 0.0706, 0.2157

RGB percentages78.8%, 7.1%, 21.6%

HSLhsl(347.9, 83.6%, 42.9%)

HSV / HSBhsv(347.9, 91%, 78.8%)

CMYK0%, 91%, 72.6%, 21.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,177,399

CSS custom property--colour: #C91237;

Brightness & contrast

Relative luminance0.13126WCAG 2.x, 0 is black and 1 is white

Perceived brightness112.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.79:1

Contrast with white5.79:1WCAG normal text: AA

Contrast with black3.63:1WCAG normal text: Fail

Greyscale equivalent#3C3C3C

Inverted#36EDC8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#534E37no red cones; affects about 1% of men; ΔE 70.9 from the original

Deuteranopia#7F7231no green cones; the most common form, about 1% of men; ΔE 70.3 from the original

Tritanopia#DD0025no blue cones; rare, and affects men and women equally; ΔE 16.7 from the original

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

Contrast with white, large text5.79:1WCAG large text: AAA

Contrast with black, large text3.63:1WCAG large text: AA

Named colours

Crimson · ΔE 6.8 Firebrick · ΔE 12.9 Brown · ΔE 17.4 Dark red · ΔE 23.7 Indian red · ΔE 25.3 Tomato · ΔE 26.1

Nearest named CSS colourCrimson (#DC143C)ΔE 6.81, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#12C9A4

Analogous#C91293, #C94912

Triadic#37C912, #1237C9

Split complementary#12C949, #1293C9

Tetradic#92C912, #12C9A4, #4812C9

Tints, shades & saturation

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

Lighter +40%#F8AFBE

Lighter +30%#F48098

Lighter +20%#EF5271

Lighter +10%#EB234B

Darker −10%#9A0E2A

Darker −20%#6B0A1D

Darker −30%#3D0511

Darker −40%#0E0104

More saturated +25%#DB002C

Less saturated −25%#AE2D47

Channel breakdown

R201

G18

B55

Red201 (78.8%)

Green18 (7.1%)

Blue55 (21.6%)

Hue347.87°

Saturation (HSL)83.56%

Lightness42.94%

Dominant channelRed

Hex per channelR C9 · G 12 · B 37

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C91237 (chemical formula)

Formula
1,095,847.607 g/mol
91237 atoms

C91237 has a molar mass of 1,095,847.607 g/mol, made up of 91237 atoms across 1 element: 91237 × C.

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Molar mass

Molar mass1,095,847.607 g/mol

Total atoms per molecule91237

Distinct elements1

Mass of one molecule1.8196978 × 10^-18 g

Molecules per gram5.4954181 × 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 × 91237)1,095,847.607 g/mol, 100%

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Elements in this formula

Carbon

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