Color

#0d0dc9

#0d0dc9
hex#0d0dc9
rgbrgb(13, 13, 201)
hslhsl(240, 88%, 42%)
oklchoklch(0.386 0.256 265.6)
Closest name: mediumblue (#0000cd)Relative luminance 0.0459

Colors that go with #0d0dc9

Charcoal, Crimson and Cornflower Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#c9c90d

#0d6bc9 · #6b0dc9

#c90d0d · #0dc90d

Split-complementary

Open in tool →

#c96b0d · #6bc90d

#c90d6b · #c9c90d · #0dc96b

Contrast

#0d0dc9 as textRatioAAAA largeAAAFix
Aaon white
10.95:1passpasspassPasses AAA — no fix needed.
Aaon black
1.92:1failfailfail
  • AA: use #6161f5 as the text (4.54:1)
  • AAA: use #8c8cf8 as the text (7.22:1)
  • AA: or shift the background to #a8a8a8 (4.6:1)
  • AAA: or shift the background to #cfcfcf (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0d0dc9 as the background.

Brands using this color

Fonts for this mood

#0d0dc9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0d0dc9
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

›analyze #0d0dc9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0d0dc9-a19cc4-df994e-251f2d-e9edf1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md