Recognised as Colour

#CA133B

#CA133B
Red
Dark
Nearest: Crimson

#CA133B is a red with RGB values 202, 19, 59 and HSL 347°, 83%, 43%. It is a dark colour, so white text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#CA133B#CA133B

HEX#CA133B

RGBrgb(202, 19, 59)

RGB (0–1)0.7922, 0.0745, 0.2314

RGB percentages79.2%, 7.5%, 23.1%

HSLhsl(346.9, 82.8%, 43.3%)

HSV / HSBhsv(346.9, 90.6%, 79.2%)

CMYK0%, 90.6%, 70.8%, 20.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,243,195

CSS custom property--colour: #CA133B;

Brightness & contrast

Relative luminance0.13338WCAG 2.x, 0 is black and 1 is white

Perceived brightness113.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.73:1

Contrast with white5.73:1WCAG normal text: AA

Contrast with black3.67:1WCAG normal text: Fail

Greyscale equivalent#3D3D3D

Inverted#35ECC4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#544E3Bno red cones; affects about 1% of men; ΔE 70.2 from the original

Deuteranopia#7F7335no green cones; the most common form, about 1% of men; ΔE 70.8 from the original

Tritanopia#DE0027no blue cones; rare, and affects men and women equally; ΔE 17.8 from the original

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

Contrast with white, large text5.73:1WCAG large text: AAA

Contrast with black, large text3.67:1WCAG large text: AA

Named colours

Crimson · ΔE 7.5 Firebrick · ΔE 14.4 Brown · ΔE 17.8 Indian red · ΔE 24.8 Dark red · ΔE 25 Maroon · ΔE 27.2

Nearest named CSS colourCrimson (#DC143C)ΔE 7.52, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#13CAA2

Analogous#CA1397, #CA4613

Triadic#3BCA13, #133BCA

Split complementary#13CA46, #1397CA

Tetradic#97CA13, #13CAA2, #4613CA

Tints, shades & saturation

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

Lighter +40%#F8B1C1

Lighter +30%#F3839B

Lighter +20%#EF5476

Lighter +10%#EB2551

Darker −10%#9B0F2D

Darker −20%#6D0A20

Darker −30%#3E0612

Darker −40%#100105

More saturated +25%#DD0030

Less saturated −25%#AE2F4B

Channel breakdown

R202

G19

B59

Red202 (79.2%)

Green19 (7.5%)

Blue59 (23.1%)

Hue346.89°

Saturation (HSL)82.81%

Lightness43.33%

Dominant channelRed

Hex per channelR CA · G 13 · B 3B

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Harmonies

Lighter and darker

Similar named colours

Also reads as

Ca133B (chemical formula)

Formula
5,341.184 g/mol
134 atoms

Ca133B has a molar mass of 5,341.184 g/mol, made up of 134 atoms across 2 elements: 133 × Ca, 1 × B.

Open this reading on its own page →

Molar mass

Molar mass5,341.184 g/mol

Total atoms per molecule134

Distinct elements2

Mass of one molecule8.8692447 × 10^-21 g

Molecules per gram1.1274917 × 10^20

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

Ca99.8%

B0.2%

Calcium (Ca × 133)5,330.374 g/mol, 99.798%

Boron (B)10.81 g/mol, 0.202%

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Elements in this formula

Nerdulate something else

Nothing in mind? Surprise me · today’s page