Recognised as Colour

#CE273B

#CE273B
Red
Dark
Nearest: Crimson

#CE273B is a red with RGB values 206, 39, 59 and HSL 353°, 68%, 48%. It is a dark colour, so white text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#CE273B#CE273B

HEX#CE273B

RGBrgb(206, 39, 59)

RGB (0–1)0.8078, 0.1529, 0.2314

RGB percentages80.8%, 15.3%, 23.1%

HSLhsl(352.8, 68.2%, 48%)

HSV / HSBhsv(352.8, 81.1%, 80.8%)

CMYK0%, 81.1%, 71.4%, 19.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,510,459

CSS custom property--colour: #CE273B;

Brightness & contrast

Relative luminance0.14889WCAG 2.x, 0 is black and 1 is white

Perceived brightness118.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.28:1

Contrast with white5.28:1WCAG normal text: AA

Contrast with black3.98:1WCAG normal text: Fail

Greyscale equivalent#4C4C4C

Inverted#31D8C4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5C553Ano red cones; affects about 1% of men; ΔE 67.6 from the original

Deuteranopia#857835no green cones; the most common form, about 1% of men; ΔE 67.9 from the original

Tritanopia#E30031no blue cones; rare, and affects men and women equally; ΔE 14.4 from the original

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

Contrast with white, large text5.28:1WCAG large text: AAA

Contrast with black, large text3.98:1WCAG large text: AA

Named colours

Crimson · ΔE 7.8 Firebrick · ΔE 11.6 Brown · ΔE 16 Indian red · ΔE 22.4 Tomato · ΔE 23 Dark red · ΔE 23.5

Nearest named CSS colourCrimson (#DC143C)ΔE 7.79, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#27CEBA

Analogous#CE278E, #CE6727

Triadic#3BCE27, #273BCE

Split complementary#27CE67, #278ECE

Tetradic#8ECE27, #27CEBA, #6727CE

Tints, shades & saturation

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

Lighter +40%#F5CCD1

Lighter +30%#EDA1AA

Lighter +20%#E57683

Lighter +10%#DD4B5D

Darker −10%#A31F2F

Darker −20%#781722

Darker −30%#4D0F16

Darker −40%#22070A

More saturated +25%#ED0824

Less saturated −25%#AF4652

Channel breakdown

R206

G39

B59

Red206 (80.8%)

Green39 (15.3%)

Blue59 (23.1%)

Hue352.81°

Saturation (HSL)68.16%

Lightness48.04%

Dominant channelRed

Hex per channelR CE · G 27 · B 3B

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Harmonies

Lighter and darker

Similar named colours

Also reads as

Ce273B (chemical formula)

Formula
38,263.57 g/mol
274 atoms

Ce273B has a molar mass of 38,263.57 g/mol, made up of 274 atoms across 2 elements: 273 × Ce, 1 × B.

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Molar mass

Molar mass38,263.57 g/mol

Total atoms per molecule274

Distinct elements2

Mass of one molecule6.3538153 × 10^-20 g

Molecules per gram1.5738575 × 10^19

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%

B0%

Cerium (Ce × 273)38,252.76 g/mol, 99.972%

Boron (B)10.81 g/mol, 0.028%

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