Recognised as Colour

#C33033

#C33033
Red
Dark
Nearest: Firebrick

#C33033 is a red with RGB values 195, 48, 51 and HSL 359°, 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

#C33033#C33033

HEX#C33033

RGBrgb(195, 48, 51)

RGB (0–1)0.7647, 0.1882, 0.2

RGB percentages76.5%, 18.8%, 20%

HSLhsl(358.8, 60.5%, 47.6%)

HSV / HSBhsv(358.8, 75.4%, 76.5%)

CMYK0%, 75.4%, 73.8%, 23.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,791,859

CSS custom property--colour: #C33033;

Brightness & contrast

Relative luminance0.13955WCAG 2.x, 0 is black and 1 is white

Perceived brightness114.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.54:1

Contrast with white5.54:1WCAG normal text: AA

Contrast with black3.79:1WCAG normal text: Fail

Greyscale equivalent#4F4F4F

Inverted#3CCFCC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5C5431no red cones; affects about 1% of men; ΔE 61.6 from the original

Deuteranopia#81742Eno green cones; the most common form, about 1% of men; ΔE 61.8 from the original

Tritanopia#D70033no blue cones; rare, and affects men and women equally; ΔE 14.2 from the original

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

Contrast with white, large text5.54:1WCAG large text: AAA

Contrast with black, large text3.79:1WCAG large text: AA

Named colours

Firebrick · ΔE 6.2 Brown · ΔE 10.8 Crimson · ΔE 13.9 Dark red · ΔE 18.6 Indian red · ΔE 19.8 Maroon · ΔE 21.2

Nearest named CSS colourFirebrick (#B22222)ΔE 6.22, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#30C3C0

Analogous#C3307C, #C37630

Triadic#33C330, #3033C3

Split complementary#30C376, #307CC3

Tetradic#7CC330, #30C3C0, #7730C3

Tints, shades & saturation

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

Lighter +40%#F3CCCD

Lighter +30%#E8A4A5

Lighter +20%#DE7B7D

Lighter +10%#D45254

Darker −10%#9A2628

Darker −20%#711C1E

Darker −30%#481213

Darker −40%#1F0808

More saturated +25%#E11216

Less saturated −25%#A54E50

Channel breakdown

R195

G48

B51

Red195 (76.5%)

Green48 (18.8%)

Blue51 (20%)

Hue358.78°

Saturation (HSL)60.49%

Lightness47.65%

Dominant channelRed

Hex per channelR C3 · G 30 · B 33

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C33033 (chemical formula)

Formula
396,759.363 g/mol
33033 atoms

C33033 has a molar mass of 396,759.363 g/mol, made up of 33033 atoms across 1 element: 33033 × C.

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Molar mass

Molar mass396,759.363 g/mol

Total atoms per molecule33033

Distinct elements1

Mass of one molecule6.5883442 × 10^-19 g

Molecules per gram1.517832 × 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 × 33033)396,759.363 g/mol, 100%

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Elements in this formula

Carbon

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