Recognised as Colour

#C23331

#C23331
Red
Dark
Nearest: Firebrick

#C23331 is a red with RGB values 194, 51, 49 and HSL 1°, 60%, 48%. It is a dark colour, so white text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#C23331#C23331

HEX#C23331

RGBrgb(194, 51, 49)

RGB (0–1)0.7608, 0.2, 0.1922

RGB percentages76.1%, 20%, 19.2%

HSLhsl(0.8, 59.7%, 47.6%)

HSV / HSBhsv(0.8, 74.7%, 76.1%)

CMYK0%, 73.7%, 74.7%, 23.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,727,089

CSS custom property--colour: #C23331;

Brightness & contrast

Relative luminance0.14059WCAG 2.x, 0 is black and 1 is white

Perceived brightness114.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.51:1

Contrast with white5.51:1WCAG normal text: AA

Contrast with black3.81:1WCAG normal text: Fail

Greyscale equivalent#515151

Inverted#3DCCCE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5E552Fno red cones; affects about 1% of men; ΔE 60 from the original

Deuteranopia#81742Cno green cones; the most common form, about 1% of men; ΔE 60.5 from the original

Tritanopia#D60034no blue cones; rare, and affects men and women equally; ΔE 15.2 from the original

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

Contrast with white, large text5.51:1WCAG large text: AAA

Contrast with black, large text3.81:1WCAG large text: AA

Named colours

Firebrick · ΔE 5.6 Brown · ΔE 10.5 Crimson · ΔE 15.3 Dark red · ΔE 17.9 Indian red · ΔE 19.7 Maroon · ΔE 20.5

Nearest named CSS colourFirebrick (#B22222)ΔE 5.59, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#31C0C2

Analogous#C23177, #C27C31

Triadic#31C233, #3331C2

Split complementary#31C27B, #3178C2

Tetradic#77C231, #31C0C2, #7B31C2

Tints, shades & saturation

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

Lighter +40%#F2CDCD

Lighter +30%#E8A5A4

Lighter +20%#DE7D7B

Lighter +10%#D35453

Darker −10%#992827

Darker −20%#711E1C

Darker −30%#481312

Darker −40%#1F0808

More saturated +25%#E01513

Less saturated −25%#A4514F

Channel breakdown

R194

G51

B49

Red194 (76.1%)

Green51 (20%)

Blue49 (19.2%)

Hue0.83°

Saturation (HSL)59.67%

Lightness47.65%

Dominant channelRed

Hex per channelR C2 · G 33 · B 31

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C23331 (chemical formula)

Formula
280,228.641 g/mol
23331 atoms

C23331 has a molar mass of 280,228.641 g/mol, made up of 23331 atoms across 1 element: 23331 × C.

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Molar mass

Molar mass280,228.641 g/mol

Total atoms per molecule23331

Distinct elements1

Mass of one molecule4.6533061 × 10^-19 g

Molecules per gram2.1490097 × 10^18

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 × 23331)280,228.641 g/mol, 100%

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Elements in this formula

Carbon

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