Recognised as Colour

#CC173C

#CC173C
Red
Dark
Nearest: Crimson

#CC173C is a red with RGB values 204, 23, 60 and HSL 348°, 80%, 45%. It is a dark colour, so white text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#CC173C#CC173C

HEX#CC173C

RGBrgb(204, 23, 60)

RGB (0–1)0.8, 0.0902, 0.2353

RGB percentages80%, 9%, 23.5%

HSLhsl(347.7, 79.7%, 44.5%)

HSV / HSBhsv(347.7, 88.7%, 80%)

CMYK0%, 88.7%, 70.6%, 20%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,375,292

CSS custom property--colour: #CC173C;

Brightness & contrast

Relative luminance0.13776WCAG 2.x, 0 is black and 1 is white

Perceived brightness114.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.59:1

Contrast with white5.59:1WCAG normal text: AA

Contrast with black3.76:1WCAG normal text: Fail

Greyscale equivalent#404040

Inverted#33E8C3

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#55503Cno red cones; affects about 1% of men; ΔE 70.7 from the original

Deuteranopia#817536no green cones; the most common form, about 1% of men; ΔE 70.9 from the original

Tritanopia#E10029no blue cones; rare, and affects men and women equally; ΔE 17.7 from the original

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

Contrast with white, large text5.59:1WCAG large text: AAA

Contrast with black, large text3.76:1WCAG large text: AA

Named colours

Crimson · ΔE 7.1 Firebrick · ΔE 14.4 Brown · ΔE 18 Indian red · ΔE 24.6 Dark red · ΔE 25.2 Tomato · ΔE 26.6

Nearest named CSS colourCrimson (#DC143C)ΔE 7.09, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#17CCA7

Analogous#CC1796, #CC4D17

Triadic#3CCC17, #173CCC

Split complementary#17CC4D, #1796CC

Tetradic#96CC17, #17CCA7, #4D17CC

Tints, shades & saturation

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

Lighter +40%#F7B8C5

Lighter +30%#F28A9F

Lighter +20%#ED5C7A

Lighter +10%#E72F54

Darker −10%#9E122F

Darker −20%#700D21

Darker −30%#430714

Darker −40%#150206

More saturated +25%#E3002E

Less saturated −25%#B0334D

Channel breakdown

R204

G23

B60

Red204 (80%)

Green23 (9%)

Blue60 (23.5%)

Hue347.73°

Saturation (HSL)79.74%

Lightness44.51%

Dominant channelRed

Hex per channelR CC · G 17 · B 3C

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Harmonies

Lighter and darker

Similar named colours

Also reads as

CC173C (chemical formula)

Formula
2,101.925 g/mol
175 atoms

CC173C has a molar mass of 2,101.925 g/mol, made up of 175 atoms across 1 element: 175 × C.

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Molar mass

Molar mass2,101.925 g/mol

Total atoms per molecule175

Distinct elements1

Mass of one molecule3.4903286 × 10^-21 g

Molecules per gram2.8650598 × 10^20

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 × 175)2,101.925 g/mol, 100%

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Elements in this formula

Carbon

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