Recognised as Colour

#C73027

#C73027
Red
Dark
Nearest: Firebrick

#C73027 is a red with RGB values 199, 48, 39 and HSL 3°, 67%, 47%. It is a dark colour, so white text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#C73027#C73027

HEX#C73027

RGBrgb(199, 48, 39)

RGB (0–1)0.7804, 0.1882, 0.1529

RGB percentages78%, 18.8%, 15.3%

HSLhsl(3.4, 67.2%, 46.7%)

HSV / HSBhsv(3.4, 80.4%, 78%)

CMYK0%, 75.9%, 80.4%, 22%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,053,991

CSS custom property--colour: #C73027;

Brightness & contrast

Relative luminance0.14403WCAG 2.x, 0 is black and 1 is white

Perceived brightness115.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.41:1

Contrast with white5.41:1WCAG normal text: AA

Contrast with black3.88:1WCAG normal text: Fail

Greyscale equivalent#4F4F4F

Inverted#38CFD8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5F5524no red cones; affects about 1% of men; ΔE 62.9 from the original

Deuteranopia#847620no green cones; the most common form, about 1% of men; ΔE 63.1 from the original

Tritanopia#DB0030no blue cones; rare, and affects men and women equally; ΔE 14.3 from the original

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

Contrast with white, large text5.41:1WCAG large text: AAA

Contrast with black, large text3.88:1WCAG large text: AA

Named colours

Firebrick · ΔE 7.5 Crimson · ΔE 15.4 Brown · ΔE 16 Tomato · ΔE 18 Dark red · ΔE 18.2 Maroon · ΔE 22.1

Nearest named CSS colourFirebrick (#B22222)ΔE 7.48, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#27BEC7

Analogous#C7276E, #C78027

Triadic#27C730, #3027C7

Split complementary#27C780, #276EC7

Tetradic#6EC727, #27BEC7, #8027C7

Tints, shades & saturation

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

Lighter +40%#F4C9C6

Lighter +30%#EBA09B

Lighter +20%#E37771

Lighter +10%#DB4F46

Darker −10%#9C261F

Darker −20%#721B16

Darker −30%#47110E

Darker −40%#1C0706

More saturated +25%#E51609

Less saturated −25%#A94A45

Channel breakdown

R199

G48

B39

Red199 (78%)

Green48 (18.8%)

Blue39 (15.3%)

Hue3.37°

Saturation (HSL)67.23%

Lightness46.67%

Dominant channelRed

Hex per channelR C7 · G 30 · B 27

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C73027 (chemical formula)

Formula
877,127.297 g/mol
73027 atoms

C73027 has a molar mass of 877,127.297 g/mol, made up of 73027 atoms across 1 element: 73027 × C.

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Molar mass

Molar mass877,127.297 g/mol

Total atoms per molecule73027

Distinct elements1

Mass of one molecule1.4565041 × 10^-18 g

Molecules per gram6.8657546 × 10^17

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 × 73027)877,127.297 g/mol, 100%

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Elements in this formula

Carbon

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