Recognised as Colour

#CC3F3F

#CC3F3F
Red
Dark
Nearest: Firebrick

#CC3F3F is a red with RGB values 204, 63, 63 and HSL 0°, 58%, 52%. It is a dark colour, so white text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#CC3F3F#CC3F3F

HEX#CC3F3F

RGBrgb(204, 63, 63)

RGB (0–1)0.8, 0.2471, 0.2471

RGB percentages80%, 24.7%, 24.7%

HSLhsl(0, 58%, 52.4%)

HSV / HSBhsv(0, 69.1%, 80%)

CMYK0%, 69.1%, 69.1%, 20%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,385,535

CSS custom property--colour: #CC3F3F;

Brightness & contrast

Relative luminance0.16751WCAG 2.x, 0 is black and 1 is white

Perceived brightness123.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.83:1

Contrast with white4.83:1WCAG normal text: AA

Contrast with black4.35:1WCAG normal text: Fail

Greyscale equivalent#5D5D5D

Inverted#33C0C0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#665E3Eno red cones; affects about 1% of men; ΔE 59.4 from the original

Deuteranopia#8A7D3Bno green cones; the most common form, about 1% of men; ΔE 59.7 from the original

Tritanopia#E01241no blue cones; rare, and affects men and women equally; ΔE 17 from the original

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

Contrast with white, large text4.83:1WCAG large text: AAA

Contrast with black, large text4.35:1WCAG large text: AA

Named colours

Firebrick · ΔE 10.4 Brown · ΔE 12 Indian red · ΔE 15.5 Crimson · ΔE 15.6 Tomato · ΔE 20.3 Salmon · ΔE 22

Nearest named CSS colourFirebrick (#B22222)ΔE 10.41, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#3FCCCC

Analogous#CC3F86, #CC863F

Triadic#3FCC3F, #3F3FCC

Split complementary#3FCC86, #3F86CC

Tetradic#86CC3F, #3FCCCC, #863FCC

Tints, shades & saturation

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

Lighter +40%#F7E0E0

Lighter +30%#ECB8B8

Lighter +20%#E19090

Lighter +10%#D76767

Darker −10%#AB2D2D

Darker −20%#822323

Darker −30%#5A1818

Darker −40%#320D0D

More saturated +25%#EA2121

Less saturated −25%#AE5D5D

Channel breakdown

R204

G63

B63

Red204 (80%)

Green63 (24.7%)

Blue63 (24.7%)

Hue0°

Saturation (HSL)58.02%

Lightness52.35%

Dominant channelRed

Hex per channelR CC · G 3F · B 3F

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Harmonies

Lighter and darker

Similar named colours

Also reads as

CC3F3F (chemical formula)

Formula
124.036 g/mol
8 atoms

CC3F3F has a molar mass of 124.036 g/mol, made up of 8 atoms across 2 elements: 4 × C, 4 × F.

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Molar mass

Molar mass124.036 g/mol

Total atoms per molecule8

Distinct elements2

Mass of one molecule2.0596662 × 10^-22 g

Molecules per gram4.8551556 × 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

C38.7%

F61.3%

Carbon (C × 4)48.044 g/mol, 38.734%

Fluorine (F × 4)75.992 g/mol, 61.266%

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Elements in this formula

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