Recognised as Colour

#C3281F

#C3281F
Red
Dark
Nearest: Firebrick

#C3281F is a red with RGB values 195, 40, 31 and HSL 3°, 73%, 44%. It is a dark colour, so white text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#C3281F#C3281F

HEX#C3281F

RGBrgb(195, 40, 31)

RGB (0–1)0.7647, 0.1569, 0.1216

RGB percentages76.5%, 15.7%, 12.2%

HSLhsl(3.3, 72.6%, 44.3%)

HSV / HSBhsv(3.3, 84.1%, 76.5%)

CMYK0%, 79.5%, 84.1%, 23.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,789,791

CSS custom property--colour: #C3281F;

Brightness & contrast

Relative luminance0.13219WCAG 2.x, 0 is black and 1 is white

Perceived brightness111.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.76:1

Contrast with white5.76:1WCAG normal text: AA

Contrast with black3.64:1WCAG normal text: Fail

Greyscale equivalent#484848

Inverted#3CD7E0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5A501Bno red cones; affects about 1% of men; ΔE 64 from the original

Deuteranopia#807215no green cones; the most common form, about 1% of men; ΔE 64.2 from the original

Tritanopia#D70028no blue cones; rare, and affects men and women equally; ΔE 12.1 from the original

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

Contrast with white, large text5.76:1WCAG large text: AAA

Contrast with black, large text3.64:1WCAG large text: AA

Named colours

Firebrick · ΔE 8.3 Crimson · ΔE 16.3 Dark red · ΔE 17.3 Brown · ΔE 17.5 Tomato · ΔE 19.3 Maroon · ΔE 21.7

Nearest named CSS colourFirebrick (#B22222)ΔE 8.34, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1FBAC3

Analogous#C31F68, #C37A1F

Triadic#1FC328, #281FC3

Split complementary#1FC37A, #1F68C3

Tetradic#68C31F, #1FBAC3, #7A1FC3

Tints, shades & saturation

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

Lighter +40%#F4BDBA

Lighter +30%#ED938E

Lighter +20%#E66962

Lighter +10%#DF3F36

Darker −10%#971F18

Darker −20%#6B1611

Darker −30%#3F0D0A

Darker −40%#130403

More saturated +25%#DF0F03

Less saturated −25%#A7413B

Channel breakdown

R195

G40

B31

Red195 (76.5%)

Green40 (15.7%)

Blue31 (12.2%)

Hue3.29°

Saturation (HSL)72.57%

Lightness44.31%

Dominant channelRed

Hex per channelR C3 · G 28 · B 1F

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C3281F (chemical formula)

Formula
39,427.089 g/mol
3282 atoms

C3281F has a molar mass of 39,427.089 g/mol, made up of 3282 atoms across 2 elements: 3281 × C, 1 × F.

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Molar mass

Molar mass39,427.089 g/mol

Total atoms per molecule3282

Distinct elements2

Mass of one molecule6.5470222 × 10^-20 g

Molecules per gram1.527412 × 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%

F0%

Carbon (C × 3281)39,408.091 g/mol, 99.952%

Fluorine (F)18.998 g/mol, 0.048%

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