Color

#0318ba

#0318ba
hex#0318ba
rgbrgb(3, 24, 186)
hslhsl(233, 97%, 37%)
oklchoklch(0.372 0.236 264.6)
Closest name: Dark Galaxy (#0018a8)Relative luminance 0.0422

Colors that go with #0318ba

Charcoal, Blue 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 →

#baa503

#0374ba · #4903ba

#ba0318 · #18ba03

Split-complementary

Open in tool →

#ba4903 · #74ba03

#ba0374 · #baa503 · #03ba49

Contrast

#0318ba as textRatioAAAA largeAAAFix
Aaon white
11.39:1passpasspassPasses AAA — no fix needed.
Aaon black
1.84:1failfailfail
  • AA: use #4f63fc as the text (4.52:1)
  • AAA: use #8190fd as the text (7.34:1)
  • AA: or shift the background to #a3a3a3 (4.52:1)
  • AAA: or shift the background to #cccccc (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 #0318ba as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#0318ba reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0318ba
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 #0318ba and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0318ba-9c9cc4-df884e-241f2d-e9eef1?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