Recognised as Colour

#CE2715

#CE2715
Red
Dark
Nearest: Firebrick

#CE2715 is a red with RGB values 206, 39, 21 and HSL 6°, 81%, 45%. It is a dark colour, so white text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#CE2715#CE2715

HEX#CE2715

RGBrgb(206, 39, 21)

RGB (0–1)0.8078, 0.1529, 0.0824

RGB percentages80.8%, 15.3%, 8.2%

HSLhsl(5.8, 81.5%, 44.5%)

HSV / HSBhsv(5.8, 89.8%, 80.8%)

CMYK0%, 81.1%, 89.8%, 19.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,510,421

CSS custom property--colour: #CE2715;

Brightness & contrast

Relative luminance0.14627WCAG 2.x, 0 is black and 1 is white

Perceived brightness116.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.35:1

Contrast with white5.35:1WCAG normal text: AA

Contrast with black3.93:1WCAG normal text: Fail

Greyscale equivalent#494949

Inverted#31D8EA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5F530Eno red cones; affects about 1% of men; ΔE 67.3 from the original

Deuteranopia#877803no green cones; the most common form, about 1% of men; ΔE 67.9 from the original

Tritanopia#E40026no blue cones; rare, and affects men and women equally; ΔE 12.6 from the original

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

Contrast with white, large text5.35:1WCAG large text: AAA

Contrast with black, large text3.93:1WCAG large text: AA

Named colours

Firebrick · ΔE 16.3 Tomato · ΔE 18.4 Crimson · ΔE 19.8 Orange red · ΔE 22.2 Dark red · ΔE 22.8 Red · ΔE 25.1

Nearest named CSS colourFirebrick (#B22222)ΔE 16.31, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#15BCCE

Analogous#CE1560, #CE8315

Triadic#15CE27, #2715CE

Split complementary#15CE83, #1560CE

Tetradic#60CE15, #15BCCE, #8415CE

Tints, shades & saturation

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

Lighter +40%#F8BEB7

Lighter +30%#F39389

Lighter +20%#EE695B

Lighter +10%#EA3F2C

Darker −10%#A01E10

Darker −20%#71150C

Darker −30%#430D07

Darker −40%#150402

More saturated +25%#E31600

Less saturated −25%#B23E31

Channel breakdown

R206

G39

B21

Red206 (80.8%)

Green39 (15.3%)

Blue21 (8.2%)

Hue5.84°

Saturation (HSL)81.5%

Lightness44.51%

Dominant channelRed

Hex per channelR CE · G 27 · B 15

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Harmonies

Lighter and darker

Similar named colours

Also reads as

Ce2715 (chemical formula)

Formula
380,425.8 g/mol
2715 atoms

Ce2715 has a molar mass of 380,425.8 g/mol, made up of 2715 atoms across 1 element: 2715 × Ce.

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Molar mass

Molar mass380,425.8 g/mol

Total atoms per molecule2715

Distinct elements1

Mass of one molecule6.317119 × 10^-19 g

Molecules per gram1.5830001 × 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

Ce100%

Cerium (Ce × 2715)380,425.8 g/mol, 100%

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Elements in this formula

Cerium

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