Recognised as Colour

#C43019

#C43019
Red
Dark
Nearest: Firebrick

#C43019 is a red with RGB values 196, 48, 25 and HSL 8°, 77%, 43%. 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

#C43019#C43019

HEX#C43019

RGBrgb(196, 48, 25)

RGB (0–1)0.7686, 0.1882, 0.098

RGB percentages76.9%, 18.8%, 9.8%

HSLhsl(8.1, 77.4%, 43.3%)

HSV / HSBhsv(8.1, 87.2%, 76.9%)

CMYK0%, 75.5%, 87.2%, 23.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,857,369

CSS custom property--colour: #C43019;

Brightness & contrast

Relative luminance0.1392WCAG 2.x, 0 is black and 1 is white

Perceived brightness113.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.55:1

Contrast with white5.55:1WCAG normal text: AA

Contrast with black3.78:1WCAG normal text: Fail

Greyscale equivalent#4E4E4E

Inverted#3BCFE6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5F5313no red cones; affects about 1% of men; ΔE 61.3 from the original

Deuteranopia#83740Dno green cones; the most common form, about 1% of men; ΔE 61.8 from the original

Tritanopia#D8002Dno blue cones; rare, and affects men and women equally; ΔE 16.5 from the original

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

Contrast with white, large text5.55:1WCAG large text: AAA

Contrast with black, large text3.78:1WCAG large text: AA

Named colours

Firebrick · ΔE 11.6 Tomato · ΔE 18.2 Dark red · ΔE 18.4 Brown · ΔE 20 Crimson · ΔE 20.3 Maroon · ΔE 22.9

Nearest named CSS colourFirebrick (#B22222)ΔE 11.56, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#19ADC4

Analogous#C41957, #C48619

Triadic#19C430, #3019C4

Split complementary#19C485, #1958C4

Tetradic#57C419, #19ADC4, #8619C4

Tints, shades & saturation

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

Lighter +40%#F5BCB4

Lighter +30%#F09586

Lighter +20%#EA6D59

Lighter +10%#E4452C

Darker −10%#972513

Darker −20%#6A1A0D

Darker −30%#3C0F08

Darker −40%#0F0402

More saturated +25%#DD1E00

Less saturated −25%#A84435

Channel breakdown

R196

G48

B25

Red196 (76.9%)

Green48 (18.8%)

Blue25 (9.8%)

Hue8.07°

Saturation (HSL)77.38%

Lightness43.33%

Dominant channelRed

Hex per channelR C4 · G 30 · B 19

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C43019 (chemical formula)

Formula
516,701.209 g/mol
43019 atoms

C43019 has a molar mass of 516,701.209 g/mol, made up of 43019 atoms across 1 element: 43019 × C.

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Molar mass

Molar mass516,701.209 g/mol

Total atoms per molecule43019

Distinct elements1

Mass of one molecule8.5800254 × 10^-19 g

Molecules per gram1.1654977 × 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 × 43019)516,701.209 g/mol, 100%

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Elements in this formula

Carbon

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