Recognised as Colour

#C42B40

#C42B40
Red
Dark
Nearest: Brown

#C42B40 is a red with RGB values 196, 43, 64 and HSL 352°, 64%, 47%. It is a dark colour, so white text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Brown.

Colour values

#C42B40#C42B40

HEX#C42B40

RGBrgb(196, 43, 64)

RGB (0–1)0.7686, 0.1686, 0.251

RGB percentages76.9%, 16.9%, 25.1%

HSLhsl(351.8, 64%, 46.9%)

HSV / HSBhsv(351.8, 78.1%, 76.9%)

CMYK0%, 78.1%, 67.3%, 23.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,856,128

CSS custom property--colour: #C42B40;

Brightness & contrast

Relative luminance0.13834WCAG 2.x, 0 is black and 1 is white

Perceived brightness114.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.58:1

Contrast with white5.58:1WCAG normal text: AA

Contrast with black3.77:1WCAG normal text: Fail

Greyscale equivalent#4D4D4D

Inverted#3BD4BF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#595340no red cones; affects about 1% of men; ΔE 63.1 from the original

Deuteranopia#7F743Bno green cones; the most common form, about 1% of men; ΔE 64.2 from the original

Tritanopia#D70034no blue cones; rare, and affects men and women equally; ΔE 15.1 from the original

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

Contrast with white, large text5.58:1WCAG large text: AAA

Contrast with black, large text3.77:1WCAG large text: AA

Named colours

Brown · ΔE 12.7 Firebrick · ΔE 12.9 Crimson · ΔE 13.6 Indian red · ΔE 18.2 Dark red · ΔE 23.5 Maroon · ΔE 24.8

Nearest named CSS colourBrown (#A52A2A)ΔE 12.73, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#2BC4AF

Analogous#C42B8D, #C4622B

Triadic#40C42B, #2B40C4

Split complementary#2BC462, #2B8DC4

Tetradic#8DC42B, #2BC4AF, #622BC4

Tints, shades & saturation

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

Lighter +40%#F3C8CE

Lighter +30%#EA9EA9

Lighter +20%#E17483

Lighter +10%#D74B5E

Darker −10%#9A2232

Darker −20%#701925

Darker −30%#470F17

Darker −40%#1D0609

More saturated +25%#E20D2A

Less saturated −25%#A64956

Channel breakdown

R196

G43

B64

Red196 (76.9%)

Green43 (16.9%)

Blue64 (25.1%)

Hue351.76°

Saturation (HSL)64.02%

Lightness46.86%

Dominant channelRed

Hex per channelR C4 · G 2B · B 40

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C42B40 (chemical formula)

Formula
936.862 g/mol
82 atoms

C42B40 has a molar mass of 936.862 g/mol, made up of 82 atoms across 2 elements: 42 × C, 40 × B.

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Molar mass

Molar mass936.862 g/mol

Total atoms per molecule82

Distinct elements2

Mass of one molecule1.555696 × 10^-21 g

Molecules per gram6.4279913 × 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

C53.8%

B46.2%

Carbon (C × 42)504.462 g/mol, 53.846%

Boron (B × 40)432.4 g/mol, 46.154%

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