Recognised as Colour

#CA1870

#CA1870
Red
Dark
Nearest: Medium violet red

#CA1870 is a red with RGB values 202, 24, 112 and HSL 330°, 79%, 44%. It is a dark colour, so white text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Medium violet red.

Colour values

#CA1870#CA1870

HEX#CA1870

RGBrgb(202, 24, 112)

RGB (0–1)0.7922, 0.0941, 0.4392

RGB percentages79.2%, 9.4%, 43.9%

HSLhsl(330.3, 78.8%, 44.3%)

HSV / HSBhsv(330.3, 88.1%, 79.2%)

CMYK0%, 88.1%, 44.6%, 20.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,244,528

CSS custom property--colour: #CA1870;

Brightness & contrast

Relative luminance0.1438WCAG 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 5.42:1

Contrast with white5.42:1WCAG normal text: AA

Contrast with black3.88:1WCAG normal text: Fail

Greyscale equivalent#444444

Inverted#35E78F

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#495572no red cones; affects about 1% of men; ΔE 68.5 from the original

Deuteranopia#78756Cno green cones; the most common form, about 1% of men; ΔE 70.3 from the original

Tritanopia#DB0044no blue cones; rare, and affects men and women equally; ΔE 30.2 from the original

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

Contrast with white, large text5.42:1WCAG large text: AAA

Contrast with black, large text3.88:1WCAG large text: AA

Named colours

Medium violet red · ΔE 13.1 Deep pink · ΔE 19.3 Hot pink · ΔE 22.9 Pale violetred · ΔE 28.6 Indian red · ΔE 35.4 Crimson · ΔE 35.9

Nearest named CSS colourMedium violet red (#C71585)ΔE 13.14, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#18CA72

Analogous#CA18C9, #CA1918

Triadic#70CA18, #1870CA

Split complementary#18CA19, #18C9CA

Tetradic#C9CA18, #18CA72, #1918CA

Tints, shades & saturation

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

Lighter +40%#F7B7D7

Lighter +30%#F18ABD

Lighter +20%#EC5CA3

Lighter +10%#E62F89

Darker −10%#9C1357

Darker −20%#6F0D3D

Darker −30%#410824

Darker −40%#14020B

More saturated +25%#E20070

Less saturated −25%#AE3470

Channel breakdown

R202

G24

B112

Red202 (79.2%)

Green24 (9.4%)

Blue112 (43.9%)

Hue330.34°

Saturation (HSL)78.76%

Lightness44.31%

Dominant channelRed

Hex per channelR CA · G 18 · B 70

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Harmonies

Lighter and darker

Similar named colours

Also reads as

Ca1870 (chemical formula)

Formula
74,945.86 g/mol
1870 atoms

Ca1870 has a molar mass of 74,945.86 g/mol, made up of 1870 atoms across 1 element: 1870 × Ca.

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Molar mass

Molar mass74,945.86 g/mol

Total atoms per molecule1870

Distinct elements1

Mass of one molecule1.2445053 × 10^-19 g

Molecules per gram8.0353214 × 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 × 1870)74,945.86 g/mol, 100%

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Elements in this formula

Calcium

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