Recognised as Colour

#CA4C31

#CA4C31
Red
Dark
Nearest: Firebrick

#CA4C31 is a red with RGB values 202, 76, 49 and HSL 11°, 61%, 49%. It is a dark colour, so black text on it reaches 4.6:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#CA4C31#CA4C31

HEX#CA4C31

RGBrgb(202, 76, 49)

RGB (0–1)0.7922, 0.298, 0.1922

RGB percentages79.2%, 29.8%, 19.2%

HSLhsl(10.6, 61%, 49.2%)

HSV / HSBhsv(10.6, 75.7%, 79.2%)

CMYK0%, 62.4%, 75.7%, 20.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,257,777

CSS custom property--colour: #CA4C31;

Brightness & contrast

Relative luminance0.17947WCAG 2.x, 0 is black and 1 is white

Perceived brightness126 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.59:1

Contrast with white4.58:1WCAG normal text: AA

Contrast with black4.59:1WCAG normal text: AA

Greyscale equivalent#656565

Inverted#35B3CE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6F642Dno red cones; affects about 1% of men; ΔE 53.2 from the original

Deuteranopia#8E802Dno green cones; the most common form, about 1% of men; ΔE 53.8 from the original

Tritanopia#DE2C46no blue cones; rare, and affects men and women equally; ΔE 21.7 from the original

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

Contrast with white, large text4.58:1WCAG large text: AAA

Contrast with black, large text4.59:1WCAG large text: AAA

Named colours

Firebrick · ΔE 13.2 Brown · ΔE 16.3 Tomato · ΔE 16.5 Coral · ΔE 19.1 Chocolate · ΔE 20.2 Indian red · ΔE 20.2

Nearest named CSS colourFirebrick (#B22222)ΔE 13.22, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#31AFCA

Analogous#CA3163, #CA9831

Triadic#31CA4C, #4C31CA

Split complementary#31CA99, #3162CA

Tetradic#62CA31, #31AFCA, #9831CA

Tints, shades & saturation

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

Lighter +40%#F4D9D3

Lighter +30%#EAB5AA

Lighter +20%#E09281

Lighter +10%#D66E58

Darker −10%#A13D27

Darker −20%#782D1D

Darker −30%#4F1E13

Darker −40%#260E09

More saturated +25%#E93812

Less saturated −25%#AB6050

Channel breakdown

R202

G76

B49

Red202 (79.2%)

Green76 (29.8%)

Blue49 (19.2%)

Hue10.59°

Saturation (HSL)60.96%

Lightness49.22%

Dominant channelRed

Hex per channelR CA · G 4C · B 31

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Harmonies

Lighter and darker

Similar named colours

Also reads as

Ca4C31 (chemical formula)

Formula
532.653 g/mol
35 atoms

Ca4C31 has a molar mass of 532.653 g/mol, made up of 35 atoms across 2 elements: 4 × Ca, 31 × C.

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Molar mass

Molar mass532.653 g/mol

Total atoms per molecule35

Distinct elements2

Mass of one molecule8.8449112 × 10^-22 g

Molecules per gram1.1305936 × 10^21

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

Ca30.1%

C69.9%

Calcium (Ca × 4)160.312 g/mol, 30.097%

Carbon (C × 31)372.341 g/mol, 69.903%

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