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283F73

#283F73 closest to Napoleonic Blue

#283F73 is a dark, moderately saturated blue; the closest named color is Napoleonic Blue. In the RGB color model it is made of 15.7% red, 24.7% green and 45.1% blue (rgb(40, 63, 115)). Its HSL value is 222° hue, 48% saturation and 30% lightness, and in CMYK it is 65% cyan, 45% magenta, 0% yellow and 55% black. #283F73 is a cool color. White text reads best on it, with a contrast ratio of 10.25:1.

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#283F73 color conversion

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RGB
HSL
HSB / HSV
HWB
CMYK
XYZ
CIELAB
CIELCh
CIELUV
OKLCH

Variations of #283F73

Shades

Mixed with black: richer and darker.

283F732135631B2C541523450F1B36091228040A1B02040F010105000001

Tints

Mixed with white: lighter and softer.

283F733B51814E638F62759D7788AB8D9BB9A2AFC7B9C2D5D0D6E3E7EAF1

Tones

Mixed with gray: calmer and more muted.

283F73304675394C774153784A5A7A53607B5C667C656D7E6E737E777A7F

Hues

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

004A5700495E00486500456F194272283F73333C733D397145366E4D3369543064

Temperatures

Cooler on the left, warmer on the right.

294B8F29488929468428447E284178283F733143723A4772434B714C4F7055536F

#283F73 color harmonies

Complementary

The opposite hue — maximum contrast and energy.

283F73735C28
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Split complementary

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

283F73733728647328
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Analogous

Neighbouring hues — calm, cohesive and natural.

283F73286573372873
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Triadic

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

283F7373283F3F7328
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Tetradic

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

283F735C2873735C283F7328
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Square

Four hues spaced at 90° — bold and playful.

283F73732865735C28287337
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#283F73 for color-blind viewers (and dogs)

How #283F73 appears with each type of color vision deficiency (Machado 2009 model) — and to your dog. Try the dog vision simulator →

  • Dog vision 97% similarHow dogs see it · simulated as #1C3E72
  • Protanopia 97% similar1.3% of men, 0.02% of women · simulated as #274475
  • Protanomaly 98% similar1.3% of men, 0.02% of women · simulated as #274374
  • Deuteranopia 97% similar1.2% of men, 0.01% of women · simulated as #1C3E72
  • Deuteranomaly 98% similar5% of men, 0.35% of women · simulated as #213F72
  • Tritanopia 84% similar0.001% of men, 0.03% of women · simulated as #004B53
  • Tritanomaly 94% similar0.0001% of men, 0.0001% of women · simulated as #1B4466
  • Achromatopsia 81% similar0.003% of men, 0.003% of women · simulated as #414141
  • Achromatomaly 87% similar0.001% of men, 0.001% of women · simulated as #3C4051

#283F73 contrast checker

AaThe quick brown fox jumps over the lazy dog.
10.25:1 Very good#283F73 text on white
AA normalPassAAA normalPass
AA largePassAAA largePass
AaThe quick brown fox jumps over the lazy dog.
2.05:1 Very poor#283F73 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 #283F73

Palettes with #283F73

#283F73 in CSS

/* Napoleonic Blue */
.color { color: #283F73; }
.background { background-color: #283F73; }
.border { border: 1px solid #283F73; }

/* Other notations */
color: rgb(40 63 115);
color: hsl(222 48% 30%);
color: oklch(0.377 0.094 264.4);

#283F73 FAQ

What color is #283F73?

#283F73 is a dark, moderately saturated blue. Its closest named color is Napoleonic Blue. It belongs to the blue color family and is a cool color.

What is the RGB value of #283F73?

#283F73 is rgb(40, 63, 115) in RGB, hsl(222, 48%, 30%) in HSL and cmyk(65%, 45%, 0%, 55%) in CMYK.

What is the complementary color of #283F73?

The complementary color of #283F73 is #735C28, which sits opposite it on the color wheel.

Which text color works on #283F73?

White text has the best contrast on #283F73: 10.25:1, which meets the WCAG AA requirement of 4.5:1 for normal text.

Is #283F73 a warm or cool color?

#283F73 is a cool color.