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1D00A3

#1D00A3 closest to Cobalt

#1D00A3 is a dark, vivid blue; the closest named color is Cobalt. In the RGB color model it is made of 11.4% red, 0.0% green and 63.9% blue (rgb(29, 0, 163)). Its HSL value is 251° hue, 100% saturation and 32% lightness, and in CMYK it is 82% cyan, 100% magenta, 0% yellow and 36% black. #1D00A3 is a cool color. White text reads best on it, with a contrast ratio of 13.28:1.

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#1D00A3 color conversion

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Variations of #1D00A3

Shades

Mixed with black: richer and darker.

1D00A318008D1300780E006309004F05003C03002A01001900000A000001

Tints

Mixed with white: lighter and softer.

1D00A32830AE394BB94D63C4647ACE7B90D794A6E0AEBCE9C8D2F1E3E9F8

Tones

Mixed with gray: calmer and more muted.

1D00A32021A126329F2F3F9C394A9A4355964F5E935B678F67708B737886

Hues

The same lightness and chroma, rotated around the color wheel.

003D4C003C52003A5A003766002E7E1D00A33100983E008D480081510074580067

Temperatures

Cooler on the left, warmer on the right.

1D26B61D21B21D1BAE1D14AB1D0BA71D00A32218A128259F302F9D38379A403F98

#1D00A3 color harmonies

Complementary

The opposite hue — maximum contrast and energy.

1D00A386A300
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Split complementary

The two hues next to the complement — contrast with less tension.

1D00A3A36F0034A300
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Analogous

Neighbouring hues — calm, cohesive and natural.

1D00A30034A36F00A3
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Triadic

Three hues evenly spaced at 120° — vibrant yet balanced.

1D00A3A31D0000A31D
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Tetradic

Two complementary pairs — rich, best with one dominant color.

1D00A3A3008686A30000A31D
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Square

Four hues spaced at 90° — bold and playful.

1D00A3A3003486A30000A36F
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#1D00A3 for color-blind viewers (and dogs)

How #1D00A3 appears with each type of color vision deficiency (Machado 2009 model) — and to your dog. Try the dog vision simulator →

  • Dog vision 91% similarHow dogs see it · simulated as #0028A1
  • Protanopia 85% similar1.3% of men, 0.02% of women · simulated as #0037A7
  • Protanomaly 90% similar1.3% of men, 0.02% of women · simulated as #002DA5
  • Deuteranopia 91% similar1.2% of men, 0.01% of women · simulated as #0028A1
  • Deuteranomaly 93% similar5% of men, 0.35% of women · simulated as #0022A2
  • Tritanopia 68% similar0.001% of men, 0.03% of women · simulated as #00415E
  • Tritanomaly 88% similar0.0001% of men, 0.0001% of women · simulated as #002989
  • Achromatopsia 56% similar0.003% of men, 0.003% of women · simulated as #303030
  • Achromatomaly 74% similar0.001% of men, 0.001% of women · simulated as #2C295F

#1D00A3 contrast checker

AaThe quick brown fox jumps over the lazy dog.
13.28:1 Super#1D00A3 text on white
AA normalPassAAA normalPass
AA largePassAAA largePass
AaThe quick brown fox jumps over the lazy dog.
1.58:1 Very poor#1D00A3 text on black
AA normalFailAAA normalFail
AA largeFailAAA largeFail

Need another background? Pick any pair in the palette generator and open the contrast panel.

Colors similar to #1D00A3

Palettes with #1D00A3

#1D00A3 in CSS

/* Cobalt */
.color { color: #1D00A3; }
.background { background-color: #1D00A3; }
.border { border: 1px solid #1D00A3; }

/* Other notations */
color: rgb(29 0 163);
color: hsl(251 100% 32%);
color: oklch(0.334 0.217 270.8);

#1D00A3 FAQ

What color is #1D00A3?

#1D00A3 is a dark, vivid blue. Its closest named color is Cobalt. It belongs to the blue color family and is a cool color.

What is the RGB value of #1D00A3?

#1D00A3 is rgb(29, 0, 163) in RGB, hsl(251, 100%, 32%) in HSL and cmyk(82%, 100%, 0%, 36%) in CMYK.

What is the complementary color of #1D00A3?

The complementary color of #1D00A3 is #86A300, which sits opposite it on the color wheel.

Which text color works on #1D00A3?

White text has the best contrast on #1D00A3: 13.28:1, which meets the WCAG AA requirement of 4.5:1 for normal text.

Is #1D00A3 a warm or cool color?

#1D00A3 is a cool color.