Medium Blue #0000CD

Medium Blue is a dark, vivid blue with hex code #0000CD and RGB rgb(0, 0, 205).

Aa

White text reads best on this color (11.16:1).

About this color

#0000CD is a dark, vivid blue. In OKLCH its lightness is 38%, its chroma 0.266 and its hue 264°. Its hue sits on the cool side of the wheel. It is the named color Medium Blue. White text reads best on it, at 11.16:1.

Hue familyBlues
Lightnessdark (38%)
Chromavivid (0.266)
Temperaturecool
Nearest nameMedium Blue
Black text1.88:1
White text11.16:1

Colors that go with Medium Blue

Matches found by rotating Medium Blue around the OKLCH hue wheel, each labelled with the closest name in our list.

Complementary

The opposite hue (180°).

Open the complementary palette in the generator

Color palettes with Medium Blue

Curated color palettes that contain a color within ΔE 0.06 (OKLab) of Medium Blue, closest first.

No curated palette has a color within ΔE 0.06 of Medium Blue yet.

Similar named colors

The eight named colors closest to Medium Blue, with their ΔE distance.

More about Medium Blue

How to make Medium Blue

A starting recipe from common paint colors, found with a spectral paint model (the color mixer’s paint mode). Real pigments vary, so mix a small test batch and adjust.

  • 2 parts blue
  • 1 part purple

Recipe result: #2D45AA, a difference of ΔE 0.114 from Medium Blue. Medium Blue is more vivid than these paints can mix, so start from a ready-made blue paint and adjust it.

What colors make blue? | Color mixing chart

Codes for Medium Blue in every format

HEX#0000CD
RGBrgb(0, 0, 205)
HSLhsl(240, 100%, 40%)
OKLCHoklch(38.3% 0.266 264.1)

Contrast

WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.

PairWCAG 2ResultAPCAAPCA guidance
White text on #0000CD 11.16:1 AAA Lc -96.6 Preferred for body text
Black text on #0000CD 1.88:1 Fails Lc 11.5 Not readable
#0000CD text on white 11.16:1 AAA Lc 92.4 Preferred for body text
#0000CD text on black 1.88:1 Fails Lc -10.0 Not readable

Shades and tints of Medium Blue

A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 900.

  1. Step 50

    50

    #F1F6FF

    oklch(97.2% 0.013 262.4)

  2. Step 100

    100

    #E0EAFF

    oklch(93.6% 0.03 265.3)

  3. Step 200

    200

    #C7DAFF

    oklch(88.6% 0.055 263.7)

  4. Step 300

    300

    #A1C0FF

    oklch(80.8% 0.096 264.1)

  5. Step 400

    400

    #6F9DFF

    oklch(70.7% 0.152 263.9)

  6. Step 500

    500

    #4A80FF

    oklch(63.1% 0.198 264.2)

  7. Step 600

    600

    #235FFF

    oklch(55.6% 0.245 264.1)

  8. Step 700

    700

    #0038FF

    oklch(49.1% 0.287 264)

  9. Step 800

    800

    #002CD5

    oklch(42.7% 0.252 264.1)

  10. Step 900

    900 (this color)

    #0000CD

    oklch(38.3% 0.266 264.1)

  11. Step 950

    950

    #001372

    oklch(27.1% 0.159 264)

Export this scale for Tailwind in the Tailwind colors tool

Medium Blue with color blindness

Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.

VisionSeen asShift (ΔE)
Protanopia (no red cones)#0046D20.091
Deuteranopia (no green cones)#002FCA0.045
Tritanopia (no blue cones)#0055770.198
Achromatopsia (no color)#3B3B3B0.268

Use Medium Blue in your product

Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.