Color

#003edb

#003edb
hex#003edb
rgbrgb(0, 62, 219)
hslhsl(223, 100%, 43%)
oklchoklch(0.459 0.242 263.4)
Closest name: Brutally Blue (#0022dd)Relative luminance 0.0856

Colors that go with #003edb

Charcoal, Crimson and Amber 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 →

#db9d00

#00acdb · #3000db

#db003e · #3edb00

Split-complementary

Open in tool →

#db3000 · #acdb00

#db00ac · #db9d00 · #00db30

Contrast

#003edb as textRatioAAAA largeAAAFix
Aaon white
7.74:1passpasspassPasses AAA — no fix needed.
Aaon black
2.71:1failfailfail
  • AA: use #2e69ff as the text (4.58:1)
  • AAA: use #6691ff as the text (7.06:1)
  • AA: or shift the background to #c7c7c7 (4.58:1)
  • AAA: or shift the background to #f5f5f5 (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #003edb as the background.

Brands using this color

Fonts for this mood

#003edb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #003edb
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 #003edb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/003edb-9ca3c4-df704e-211f2d-e9eff1?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