Recognised as Colour

#CC4540

#CC4540
Red
Dark
Nearest: Firebrick

#CC4540 is a red with RGB values 204, 69, 64 and HSL 2°, 58%, 53%. It is a dark colour, so white text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#CC4540#CC4540

HEX#CC4540

RGBrgb(204, 69, 64)

RGB (0–1)0.8, 0.2706, 0.251

RGB percentages80%, 27.1%, 25.1%

HSLhsl(2.1, 57.9%, 52.5%)

HSV / HSBhsv(2.1, 68.6%, 80%)

CMYK0%, 66.2%, 68.6%, 20%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,387,072

CSS custom property--colour: #CC4540;

Brightness & contrast

Relative luminance0.17464WCAG 2.x, 0 is black and 1 is white

Perceived brightness125.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.67:1

Contrast with white4.67:1WCAG normal text: AA

Contrast with black4.49:1WCAG normal text: Fail

Greyscale equivalent#616161

Inverted#33BABF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6A623Eno red cones; affects about 1% of men; ΔE 57.2 from the original

Deuteranopia#8C7F3Cno green cones; the most common form, about 1% of men; ΔE 57.5 from the original

Tritanopia#E02245no blue cones; rare, and affects men and women equally; ΔE 17.1 from the original

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

Contrast with white, large text4.67:1WCAG large text: AAA

Contrast with black, large text4.49:1WCAG large text: AA

Named colours

Firebrick · ΔE 11.3 Brown · ΔE 12 Indian red · ΔE 14.1 Crimson · ΔE 18 Tomato · ΔE 19.8 Salmon · ΔE 20.3

Nearest named CSS colourFirebrick (#B22222)ΔE 11.31, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#40C7CC

Analogous#CC4081, #CC8B40

Triadic#40CC45, #4540CC

Split complementary#40CC8B, #4081CC

Tetradic#81CC40, #40C7CC, #8B40CC

Tints, shades & saturation

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

Lighter +40%#F7E2E1

Lighter +30%#ECBBB9

Lighter +20%#E19391

Lighter +10%#D76C68

Darker −10%#AB322E

Darker −20%#832623

Darker −30%#5B1B18

Darker −40%#330F0D

More saturated +25%#EA2922

Less saturated −25%#AE615E

Channel breakdown

R204

G69

B64

Red204 (80%)

Green69 (27.1%)

Blue64 (25.1%)

Hue2.14°

Saturation (HSL)57.85%

Lightness52.55%

Dominant channelRed

Hex per channelR CC · G 45 · B 40

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Harmonies

Lighter and darker

Similar named colours

Also reads as

CC4540 (chemical formula)

Formula
54,541.951 g/mol
4541 atoms

CC4540 has a molar mass of 54,541.951 g/mol, made up of 4541 atoms across 1 element: 4541 × C.

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Molar mass

Molar mass54,541.951 g/mol

Total atoms per molecule4541

Distinct elements1

Mass of one molecule9.056904 × 10^-20 g

Molecules per gram1.1041301 × 10^19

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 × 4541)54,541.951 g/mol, 100%

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Elements in this formula

Carbon

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