Color

#0d00bd

#0d00bd
hex#0d00bd
rgbrgb(13, 0, 189)
hslhsl(244, 100%, 37%)
oklchoklch(0.364 0.248 265.7)
Closest name: mediumblue (#0000cd)Relative luminance 0.0376

Colors that go with #0d00bd

Charcoal, Crimson and Cobalt 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 →

#b0bd00

#0052bd · #6b00bd

#bd0d00 · #00bd0d

Split-complementary

Open in tool →

#bd6b00 · #52bd00

#bd0052 · #b0bd00 · #00bd6b

Contrast

#0d00bd as textRatioAAAA largeAAAFix
Aaon white
11.99:1passpasspassPasses AAA — no fix needed.
Aaon black
1.75:1failfailfail
  • AA: use #675cff as the text (4.55:1)
  • AAA: use #928aff as the text (7.3:1)
  • AA: or shift the background to #a1a1a1 (4.64:1)
  • AAA: or shift the background to #c7c7c7 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0d00bd as the background.

Brands using this color

Fonts for this mood

#0d00bd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0d00bd
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 #0d00bd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0d00bd-a39cc4-dfa24e-261f2d-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