Recognised as Colour

#CE2815

#CE2815
Red
Dark
Nearest: Firebrick

#CE2815 is a red with RGB values 206, 40, 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

#CE2815#CE2815

HEX#CE2815

RGBrgb(206, 40, 21)

RGB (0–1)0.8078, 0.1569, 0.0824

RGB percentages80.8%, 15.7%, 8.2%

HSLhsl(6.2, 81.5%, 44.5%)

HSV / HSBhsv(6.2, 89.8%, 80.8%)

CMYK0%, 80.6%, 89.8%, 19.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,510,677

CSS custom property--colour: #CE2815;

Brightness & contrast

Relative luminance0.14694WCAG 2.x, 0 is black and 1 is white

Perceived brightness117 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.33:1

Contrast with white5.33:1WCAG normal text: AA

Contrast with black3.94:1WCAG normal text: Fail

Greyscale equivalent#4A4A4A

Inverted#31D7EA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5F540Eno red cones; affects about 1% of men; ΔE 67.6 from the original

Deuteranopia#877803no green cones; the most common form, about 1% of men; ΔE 67.6 from the original

Tritanopia#E30027no blue cones; rare, and affects men and women equally; ΔE 12.9 from the original

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

Contrast with white, large text5.33:1WCAG large text: AAA

Contrast with black, large text3.94:1WCAG large text: AA

Named colours

Firebrick · ΔE 16.3 Tomato · ΔE 18.2 Crimson · ΔE 19.9 Orange red · ΔE 22.2 Dark red · ΔE 22.8 Red · ΔE 25.2

Nearest named CSS colourFirebrick (#B22222)ΔE 16.3, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#15BBCE

Analogous#CE155E, #CE8515

Triadic#15CE28, #2815CE

Split complementary#15CE85, #155ECE

Tetradic#5ECE15, #15BBCE, #8515CE

Tints, shades & saturation

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

Lighter +40%#F8BEB7

Lighter +30%#F39489

Lighter +20%#EE6A5B

Lighter +10%#EA402C

Darker −10%#A01F10

Darker −20%#71160C

Darker −30%#430D07

Darker −40%#150402

More saturated +25%#E31700

Less saturated −25%#B23F31

Channel breakdown

R206

G40

B21

Red206 (80.8%)

Green40 (15.7%)

Blue21 (8.2%)

Hue6.16°

Saturation (HSL)81.5%

Lightness44.51%

Dominant channelRed

Hex per channelR CE · G 28 · B 15

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Harmonies

Lighter and darker

Similar named colours

Also reads as

Ce2815 (chemical formula)

Formula
394,437.8 g/mol
2815 atoms

Ce2815 has a molar mass of 394,437.8 g/mol, made up of 2815 atoms across 1 element: 2815 × Ce.

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Molar mass

Molar mass394,437.8 g/mol

Total atoms per molecule2815

Distinct elements1

Mass of one molecule6.5497938 × 10^-19 g

Molecules per gram1.5267656 × 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 × 2815)394,437.8 g/mol, 100%

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Elements in this formula

Cerium

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