Recognised as Colour

#C31447

#C31447
Red
Dark
Nearest: Crimson

#C31447 is a red with RGB values 195, 20, 71 and HSL 343°, 81%, 42%. It is a dark colour, so white text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#C31447#C31447

HEX#C31447

RGBrgb(195, 20, 71)

RGB (0–1)0.7647, 0.0784, 0.2784

RGB percentages76.5%, 7.8%, 27.8%

HSLhsl(342.5, 81.4%, 42.2%)

HSV / HSBhsv(342.5, 89.7%, 76.5%)

CMYK0%, 89.7%, 63.6%, 23.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,784,711

CSS custom property--colour: #C31447;

Brightness & contrast

Relative luminance0.12557WCAG 2.x, 0 is black and 1 is white

Perceived brightness110.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.98:1

Contrast with white5.98:1WCAG normal text: AA

Contrast with black3.51:1WCAG normal text: Fail

Greyscale equivalent#3D3D3D

Inverted#3CEBB8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4F4D47no red cones; affects about 1% of men; ΔE 68.1 from the original

Deuteranopia#797042no green cones; the most common form, about 1% of men; ΔE 69.3 from the original

Tritanopia#D6002Dno blue cones; rare, and affects men and women equally; ΔE 21.2 from the original

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

Contrast with white, large text5.98:1WCAG large text: AAA

Contrast with black, large text3.51:1WCAG large text: AA

Named colours

Crimson · ΔE 16 Brown · ΔE 19.5 Firebrick · ΔE 20.5 Indian red · ΔE 23.4 Dark red · ΔE 29.5 Maroon · ΔE 30.2

Nearest named CSS colourCrimson (#DC143C)ΔE 15.96, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#14C390

Analogous#C3149E, #C33914

Triadic#47C314, #1447C3

Split complementary#14C339, #149EC3

Tetradic#9EC314, #14C390, #3914C3

Tints, shades & saturation

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

Lighter +40%#F7ACC2

Lighter +30%#F27EA0

Lighter +20%#ED507E

Lighter +10%#E8225C

Darker −10%#950F36

Darker −20%#660B25

Darker −30%#380614

Darker −40%#0A0104

More saturated +25%#D7003F

Less saturated −25%#A82F52

Channel breakdown

R195

G20

B71

Red195 (76.5%)

Green20 (7.8%)

Blue71 (27.8%)

Hue342.51°

Saturation (HSL)81.4%

Lightness42.16%

Dominant channelRed

Hex per channelR C3 · G 14 · B 47

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C31447 (chemical formula)

Formula
377,709.917 g/mol
31447 atoms

C31447 has a molar mass of 377,709.917 g/mol, made up of 31447 atoms across 1 element: 31447 × C.

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Molar mass

Molar mass377,709.917 g/mol

Total atoms per molecule31447

Distinct elements1

Mass of one molecule6.2720207 × 10^-19 g

Molecules per gram1.5943825 × 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 × 31447)377,709.917 g/mol, 100%

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Elements in this formula

Carbon

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