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1D00A4

#1D00A4 closest to Cobalt

#1D00A4 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 64.3% blue (rgb(29, 0, 164)). 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. #1D00A4 is a cool color. White text reads best on it, with a contrast ratio of 13.22:1.

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#1D00A4 color conversion

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Variations of #1D00A4

Shades

Mixed with black: richer and darker.

1D00A418008E1300790E006409005005003D03002B01001A00000A000001

Tints

Mixed with white: lighter and softer.

1D00A42830AF394CBA4D63C5637ACE7B90D894A6E1AEBCE9C8D2F1E3E9F8

Tones

Mixed with gray: calmer and more muted.

1D00A42021A22632A02F3F9D394B9A4355974F5E935B678F67708B737886

Hues

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

003E4D003C53003B5B003866002F7E1D00A43100993E008E490081510075580067

Temperatures

Cooler on the left, warmer on the right.

1D27B71D21B31D1BAF1D14AB1D0BA81D00A42218A22826A0302F9E38389B403F99

#1D00A4 color harmonies

Complementary

The opposite hue — maximum contrast and energy.

1D00A487A400
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Split complementary

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

1D00A4A46F0035A400
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Analogous

Neighbouring hues — calm, cohesive and natural.

1D00A40035A46F00A4
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Triadic

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

1D00A4A41D0000A41D
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Tetradic

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

1D00A4A4008787A40000A41D
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Square

Four hues spaced at 90° — bold and playful.

1D00A4A4003587A40000A46F
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#1D00A4 for color-blind viewers (and dogs)

How #1D00A4 appears with each type of color vision deficiency (Machado 2009 model) — and to your dog. Try the dog vision simulator →

  • Dog vision 92% similarHow dogs see it · simulated as #0028A2
  • Protanopia 86% similar1.3% of men, 0.02% of women · simulated as #0037A8
  • Protanomaly 89% similar1.3% of men, 0.02% of women · simulated as #002EA6
  • Deuteranopia 92% similar1.2% of men, 0.01% of women · simulated as #0028A2
  • Deuteranomaly 93% similar5% of men, 0.35% of women · simulated as #0022A3
  • Tritanopia 67% similar0.001% of men, 0.03% of women · simulated as #00425E
  • Tritanomaly 88% similar0.0001% of men, 0.0001% of women · simulated as #00298A
  • 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

#1D00A4 contrast checker

AaThe quick brown fox jumps over the lazy dog.
13.22:1 Super#1D00A4 text on white
AA normalPassAAA normalPass
AA largePassAAA largePass
AaThe quick brown fox jumps over the lazy dog.
1.59:1 Very poor#1D00A4 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 #1D00A4

Palettes with #1D00A4

#1D00A4 in CSS

/* Cobalt */
.color { color: #1D00A4; }
.background { background-color: #1D00A4; }
.border { border: 1px solid #1D00A4; }

/* Other notations */
color: rgb(29 0 164);
color: hsl(251 100% 32%);
color: oklch(0.335 0.218 270.7);

#1D00A4 FAQ

What color is #1D00A4?

#1D00A4 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 #1D00A4?

#1D00A4 is rgb(29, 0, 164) in RGB, hsl(251, 100%, 32%) in HSL and cmyk(82%, 100%, 0%, 36%) in CMYK.

What is the complementary color of #1D00A4?

The complementary color of #1D00A4 is #87A400, which sits opposite it on the color wheel.

Which text color works on #1D00A4?

White text has the best contrast on #1D00A4: 13.22:1, which meets the WCAG AA requirement of 4.5:1 for normal text.

Is #1D00A4 a warm or cool color?

#1D00A4 is a cool color.