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Medium Blue

Hex #0000CD, rgb(0 0 205). A blue CSS named color.

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Medium Blue color codes

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RGB
HSL
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HWB
CMYK
OKLCH
OKLab
Lab
LCH
CSS keyword

About Medium Blue

Medium Blue is a dark vivid blue with the hex code #0000CD. In RGB it is made of 0 red, 0 green and 205 blue; in HSL its hue is 240°, with 100% saturation and 40% lightness. Its perceptual lightness (OKLCH L) is 38.3%.

It is a CSS named color, so you can write "mediumblue" anywhere CSS accepts a color. Against white it has a contrast ratio of 11.16:1 and against black 1.88:1, so white text reads better on it and passes WCAG AA for normal text.

Tints, shades and tones

Medium Blue mixed step by step with white, black and middle gray (#808080).

Tints (with white)

Shades (with black)

Tones (with gray)

Medium Blue 50-950 scale

A Tailwind-style scale built in OKLCH; the original color sits on the step with the closest lightness.

Colors that go with Medium Blue

Color harmonies rotate the hue in OKLCH and keep the lightness and chroma. Each color links to its closest named color.

Complementary

Analogous

Triadic

Split complementary

Tetradic

Square

Monochromatic

Contrast and readability

WCAG 2 contrast of Medium Blue with white and black. The readable text color on Medium Blue is white.

Medium Blue textSmall text on white

On white11.16:1

  • AA pass
  • AA Large pass
  • AAA pass
  • UI 3:1 pass

APCA Lc 92

Medium Blue textSmall text on black

On black1.88:1

  • AA fail
  • AA Large fail
  • AAA fail
  • UI 3:1 fail

APCA Lc -10

White text on Medium Blue (#FFFFFF)

Test any pair in the contrast checker.

Color blindness preview

How Medium Blue appears with each type of color vision deficiency (simulated with the Machado model).

  • Protanopia#0046D2
  • Deuteranopia#002FCA
  • Tritanopia#005577
  • Protanomaly#003AD0
  • Deuteranomaly#002BCB
  • Tritanomaly#0036AD
  • Achromatopsia#3B3B3B

Colors similar to Medium Blue

The closest named colors by perceptual difference (OKLab).

Use Medium Blue in CSS and Tailwind

CSS
.medium-blue {
  color: mediumblue; /* #0000CD */
  background-color: rgb(0 0 205);
  border-color: oklch(38.3% 0.266 264.1);
}
Tailwind CSS
/* Tailwind CSS v4: bg-medium-blue-500, text-medium-blue-700... */
@theme {
  --color-medium-blue-50: #F8FAFF;
  --color-medium-blue-100: #E6EEFF;
  --color-medium-blue-200: #CCDDFF;
  --color-medium-blue-300: #A4C2FF;
  --color-medium-blue-400: #6F9CFF;
  --color-medium-blue-500: #4C82FF;
  --color-medium-blue-600: #2C67FF;
  --color-medium-blue-700: #033DFF;
  --color-medium-blue-800: #002CDA;
  --color-medium-blue-900: #0000CD;
  --color-medium-blue-950: #000053;
}

<!-- or the exact color, no config -->
<div class="bg-[#0000CD] text-[#FFFFFF]">…</div>