Color

#0380ce

#0380ce
hex#0380ce
rgbrgb(3, 128, 206)
hslhsl(203, 97%, 41%)
oklchoklch(0.582 0.151 246.5)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.1991

Colors that go with #0380ce

Charcoal, Crimson and Copper 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 →

#ce5103

#03ceb6 · #031bce

#ce0380 · #80ce03

Split-complementary

Open in tool →

#ce031b · #ceb603

#b603ce · #ce5103 · #1bce03

Contrast

#0380ce as textRatioAAAA largeAAAFix
Aaon white
4.21:1failpassfail
  • AA: use #037ac4 as the text (4.58:1)
  • AAA: use #025b92 as the text (7.21:1)
  • AA: or shift the background to #0f0f0f (4.55:1)
Aaon black
4.98:1passpassfail
  • AAA: use #049cfb as the text (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0380ce as the background.

Brands using this color

Fonts for this mood

#0380ce reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0380ce
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 #0380ce and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0380ce-9cb0c4-df4e5d-1f222d-e9f1f0?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