Recognised as Colour

#CA2203

#CA2203
Red
Dark
Nearest: Orange red

#CA2203 is a red with RGB values 202, 34, 3 and HSL 9°, 97%, 40%. It is a dark colour, so white text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#CA2203#CA2203

HEX#CA2203

RGBrgb(202, 34, 3)

RGB (0–1)0.7922, 0.1333, 0.0118

RGB percentages79.2%, 13.3%, 1.2%

HSLhsl(9.3, 97.1%, 40.2%)

HSV / HSBhsv(9.3, 98.5%, 79.2%)

CMYK0%, 83.2%, 98.5%, 20.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,246,979

CSS custom property--colour: #CA2203;

Brightness & contrast

Relative luminance0.13707WCAG 2.x, 0 is black and 1 is white

Perceived brightness113.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.61:1

Contrast with white5.61:1WCAG normal text: AA

Contrast with black3.74:1WCAG normal text: Fail

Greyscale equivalent#434343

Inverted#35DDFC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5C5000no red cones; affects about 1% of men; ΔE 67.7 from the original

Deuteranopia#847400no green cones; the most common form, about 1% of men; ΔE 66.9 from the original

Tritanopia#DF0020no 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 text5.61:1WCAG large text: AAA

Contrast with black, large text3.74:1WCAG large text: AA

Named colours

Orange red · ΔE 19.6 Firebrick · ΔE 20.1 Tomato · ΔE 21.2 Red · ΔE 23 Crimson · ΔE 24.3 Dark red · ΔE 24.4

Nearest named CSS colourOrange red (#FF4500)ΔE 19.64, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#03ABCA

Analogous#CA0348, #CA8503

Triadic#03CA22, #2203CA

Split complementary#03CA85, #0348CA

Tetradic#48CA03, #03ABCA, #8503CA

Tints, shades & saturation

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

Lighter +40%#FEAB9B

Lighter +30%#FD8069

Lighter +20%#FC5637

Lighter +10%#FB2B05

Darker −10%#981A02

Darker −20%#651102

Darker −30%#330901

Darker −40%#010000

More saturated +25%#CD2000

Less saturated −25%#B0341D

Channel breakdown

R202

G34

Red202 (79.2%)

Green34 (13.3%)

Blue3 (1.2%)

Hue9.35°

Saturation (HSL)97.07%

Lightness40.2%

Dominant channelRed

Hex per channelR CA · G 22 · B 03

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Harmonies

Lighter and darker

Similar named colours

Also reads as

Ca2203 (chemical formula)

Formula
88,291.834 g/mol
2203 atoms

Ca2203 has a molar mass of 88,291.834 g/mol, made up of 2203 atoms across 1 element: 2203 × Ca.

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Molar mass

Molar mass88,291.834 g/mol

Total atoms per molecule2203

Distinct elements1

Mass of one molecule1.4661204 × 10^-19 g

Molecules per gram6.8207222 × 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 × 2203)88,291.834 g/mol, 100%

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Elements in this formula

Calcium

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