Recognised as Colour

#C30715

#C30715
Red
Dark
Nearest: Firebrick

#C30715 is a red with RGB values 195, 7, 21 and HSL 356°, 93%, 40%. It is a dark colour, so white text on it reaches 6.2:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#C30715#C30715

HEX#C30715

RGBrgb(195, 7, 21)

RGB (0–1)0.7647, 0.0275, 0.0824

RGB percentages76.5%, 2.7%, 8.2%

HSLhsl(355.5, 93.1%, 39.6%)

HSV / HSBhsv(355.5, 96.4%, 76.5%)

CMYK0%, 96.4%, 89.2%, 23.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,781,333

CSS custom property--colour: #C30715;

Brightness & contrast

Relative luminance0.11808WCAG 2.x, 0 is black and 1 is white

Perceived brightness107 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.25:1

Contrast with white6.25:1WCAG normal text: AA

Contrast with black3.36:1WCAG normal text: Fail

Greyscale equivalent#303030

Inverted#3CF8EA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#524811no red cones; affects about 1% of men; ΔE 70.1 from the original

Deuteranopia#7C6E03no green cones; the most common form, about 1% of men; ΔE 70.1 from the original

Tritanopia#D80013no blue cones; rare, and affects men and women equally; ΔE 9.3 from the original

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

Contrast with white, large text6.25:1WCAG large text: AAA

Contrast with black, large text3.36:1WCAG large text: AA

Named colours

Firebrick · ΔE 13.3 Crimson · ΔE 16.1 Dark red · ΔE 19.9 Tomato · ΔE 22.5 Brown · ΔE 22.9 Maroon · ΔE 24.7

Nearest named CSS colourFirebrick (#B22222)ΔE 13.32, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#07C3B5

Analogous#C30773, #C35707

Triadic#15C307, #0715C3

Split complementary#07C357, #0773C3

Tetradic#73C307, #07C3B5, #5707C3

Tints, shades & saturation

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

Lighter +40%#FB9BA2

Lighter +30%#FA6974

Lighter +20%#F83846

Lighter +10%#F4091A

Darker −10%#920510

Darker −20%#61030A

Darker −30%#2F0205

Darker −40%#000000

More saturated +25%#CA000F

Less saturated −25%#AA202A

Channel breakdown

R195

B21

Red195 (76.5%)

Green7 (2.7%)

Blue21 (8.2%)

Hue355.53°

Saturation (HSL)93.07%

Lightness39.61%

Dominant channelRed

Hex per channelR C3 · G 07 · B 15

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C30715 (chemical formula)

Formula
368,917.865 g/mol
30715 atoms

C30715 has a molar mass of 368,917.865 g/mol, made up of 30715 atoms across 1 element: 30715 × C.

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Molar mass

Molar mass368,917.865 g/mol

Total atoms per molecule30715

Distinct elements1

Mass of one molecule6.1260253 × 10^-19 g

Molecules per gram1.6323798 × 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 × 30715)368,917.865 g/mol, 100%

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Elements in this formula

Carbon

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