Recognised as Colour

#C3301F

#C3301F
Red
Dark
Nearest: Firebrick

#C3301F is a red with RGB values 195, 48, 31 and HSL 6°, 73%, 44%. It is a dark colour, so white text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#C3301F#C3301F

HEX#C3301F

RGBrgb(195, 48, 31)

RGB (0–1)0.7647, 0.1882, 0.1216

RGB percentages76.5%, 18.8%, 12.2%

HSLhsl(6.2, 72.6%, 44.3%)

HSV / HSBhsv(6.2, 84.1%, 76.5%)

CMYK0%, 75.4%, 84.1%, 23.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,791,839

CSS custom property--colour: #C3301F;

Brightness & contrast

Relative luminance0.13815WCAG 2.x, 0 is black and 1 is white

Perceived brightness113.3 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 black3.76:1WCAG normal text: Fail

Greyscale equivalent#4E4E4E

Inverted#3CCFE0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5E531Bno red cones; affects about 1% of men; ΔE 61.3 from the original

Deuteranopia#827416no green cones; the most common form, about 1% of men; ΔE 61.9 from the original

Tritanopia#D7002Eno blue cones; rare, and affects men and women equally; ΔE 15.5 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 text3.76:1WCAG large text: AA

Named colours

Firebrick · ΔE 8.9 Dark red · ΔE 17.3 Brown · ΔE 17.3 Tomato · ΔE 18.3 Crimson · ΔE 18.5 Maroon · ΔE 21.5

Nearest named CSS colourFirebrick (#B22222)ΔE 8.85, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1FB2C3

Analogous#C31F60, #C3821F

Triadic#1FC330, #301FC3

Split complementary#1FC382, #1F60C3

Tetradic#60C31F, #1FB2C3, #821FC3

Tints, shades & saturation

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

Lighter +40%#F4C0BA

Lighter +30%#ED988E

Lighter +20%#E67062

Lighter +10%#DF4736

Darker −10%#972518

Darker −20%#6B1A11

Darker −30%#3F100A

Darker −40%#130503

More saturated +25%#DF1A03

Less saturated −25%#A7463B

Channel breakdown

R195

G48

B31

Red195 (76.5%)

Green48 (18.8%)

Blue31 (12.2%)

Hue6.22°

Saturation (HSL)72.57%

Lightness44.31%

Dominant channelRed

Hex per channelR C3 · G 30 · B 1F

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C3301F (chemical formula)

Formula
39,667.309 g/mol
3302 atoms

C3301F has a molar mass of 39,667.309 g/mol, made up of 3302 atoms across 2 elements: 3301 × C, 1 × F.

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Molar mass

Molar mass39,667.309 g/mol

Total atoms per molecule3302

Distinct elements2

Mass of one molecule6.5869116 × 10^-20 g

Molecules per gram1.5181622 × 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 × 3301)39,648.311 g/mol, 99.952%

Fluorine (F)18.998 g/mol, 0.048%

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