Recognised as Colour

#CA2033

#CA2033
Red
Dark
Nearest: Crimson

#CA2033 is a red with RGB values 202, 32, 51 and HSL 353°, 73%, 46%. It is a dark colour, so white text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#CA2033#CA2033

HEX#CA2033

RGBrgb(202, 32, 51)

RGB (0–1)0.7922, 0.1255, 0.2

RGB percentages79.2%, 12.5%, 20%

HSLhsl(353.3, 72.6%, 45.9%)

HSV / HSBhsv(353.3, 84.2%, 79.2%)

CMYK0%, 84.2%, 74.8%, 20.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,246,515

CSS custom property--colour: #CA2033;

Brightness & contrast

Relative luminance0.13829WCAG 2.x, 0 is black and 1 is white

Perceived brightness114.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.58:1

Contrast with white5.58:1WCAG normal text: AA

Contrast with black3.77:1WCAG normal text: Fail

Greyscale equivalent#464646

Inverted#35DFCC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#585132no red cones; affects about 1% of men; ΔE 68.5 from the original

Deuteranopia#82752Dno green cones; the most common form, about 1% of men; ΔE 68.4 from the original

Tritanopia#DF002Ano blue cones; rare, and affects men and women equally; ΔE 13.5 from the original

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

Contrast with white, large text5.58:1WCAG large text: AAA

Contrast with black, large text3.77:1WCAG large text: AA

Named colours

Crimson · ΔE 7.8 Firebrick · ΔE 9.8 Brown · ΔE 16 Dark red · ΔE 21.5 Tomato · ΔE 22.6 Indian red · ΔE 24.5

Nearest named CSS colourCrimson (#DC143C)ΔE 7.81, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#20CAB7

Analogous#CA2088, #CA6220

Triadic#33CA20, #2033CA

Split complementary#20CA62, #2088CA

Tetradic#88CA20, #20CAB7, #6220CA

Tints, shades & saturation

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

Lighter +40%#F5C1C7

Lighter +30%#EE959F

Lighter +20%#E76977

Lighter +10%#E03D4F

Darker −10%#9E1928

Darker −20%#72121D

Darker −30%#460B12

Darker −40%#1A0407

More saturated +25%#E7031C

Less saturated −25%#AD3D4A

Channel breakdown

R202

G32

B51

Red202 (79.2%)

Green32 (12.5%)

Blue51 (20%)

Hue353.29°

Saturation (HSL)72.65%

Lightness45.88%

Dominant channelRed

Hex per channelR CA · G 20 · B 33

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Harmonies

Lighter and darker

Similar named colours

Also reads as

Ca2033 (chemical formula)

Formula
81,478.574 g/mol
2033 atoms

Ca2033 has a molar mass of 81,478.574 g/mol, made up of 2033 atoms across 1 element: 2033 × Ca.

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Molar mass

Molar mass81,478.574 g/mol

Total atoms per molecule2033

Distinct elements1

Mass of one molecule1.3529836 × 10^-19 g

Molecules per gram7.3910728 × 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

Ca100%

Calcium (Ca × 2033)81,478.574 g/mol, 100%

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Elements in this formula

Calcium

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