Recognised as Colour

#C90139

#C90139
Red
Dark
Nearest: Crimson

#C90139 is a red with RGB values 201, 1, 57 and HSL 343°, 99%, 40%. 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

#C90139#C90139

HEX#C90139

RGBrgb(201, 1, 57)

RGB (0–1)0.7882, 0.0039, 0.2235

RGB percentages78.8%, 0.4%, 22.4%

HSLhsl(343.2, 99%, 39.6%)

HSV / HSBhsv(343.2, 99.5%, 78.8%)

CMYK0%, 99.5%, 71.6%, 21.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,173,049

CSS custom property--colour: #C90139;

Brightness & contrast

Relative luminance0.12735WCAG 2.x, 0 is black and 1 is white

Perceived brightness111.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.92:1

Contrast with white5.92:1WCAG normal text: AA

Contrast with black3.55:1WCAG normal text: Fail

Greyscale equivalent#303030

Inverted#36FEC6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#504B39no red cones; affects about 1% of men; ΔE 72.3 from the original

Deuteranopia#7D7133no green cones; the most common form, about 1% of men; ΔE 72.4 from the original

Tritanopia#DD0021no blue cones; rare, and affects men and women equally; ΔE 20 from the original

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

Contrast with white, large text5.92:1WCAG large text: AAA

Contrast with black, large text3.55:1WCAG large text: AA

Named colours

Crimson · ΔE 7.2 Firebrick · ΔE 15.3 Brown · ΔE 19.1 Dark red · ΔE 25.5 Indian red · ΔE 26.6 Maroon · ΔE 27.7

Nearest named CSS colourCrimson (#DC143C)ΔE 7.2, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#01C991

Analogous#C9019D, #C92D01

Triadic#39C901, #0139C9

Split complementary#01C92D, #019DC9

Tetradic#9DC901, #01C991, #2D01C9

Tints, shades & saturation

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

Lighter +40%#FE98B4

Lighter +30%#FE6590

Lighter +20%#FE326B

Lighter +10%#FC0147

Darker −10%#96012B

Darker −20%#64001C

Darker −30%#31000E

Darker −40%#000000

More saturated +25%#CA0039

Less saturated −25%#B01A44

Channel breakdown

R201

B57

Red201 (78.8%)

Green1 (0.4%)

Blue57 (22.4%)

Hue343.2°

Saturation (HSL)99.01%

Lightness39.61%

Dominant channelRed

Hex per channelR C9 · G 01 · B 39

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C90139 (chemical formula)

Formula
1,082,659.529 g/mol
90139 atoms

C90139 has a molar mass of 1,082,659.529 g/mol, made up of 90139 atoms across 1 element: 90139 × C.

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Molar mass

Molar mass1,082,659.529 g/mol

Total atoms per molecule90139

Distinct elements1

Mass of one molecule1.7977984 × 10^-18 g

Molecules per gram5.5623588 × 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 × 90139)1,082,659.529 g/mol, 100%

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Elements in this formula

Carbon

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