Color

#063f89

#063f89
hex#063f89
rgbrgb(6, 63, 137)
hslhsl(214, 92%, 28%)
oklchoklch(0.382 0.135 258.1)
Closest name: Deep Space Royal (#223382)Relative luminance 0.054

Colors that go with #063f89

Charcoal, Crimson and Steel 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.

Real palettes that use #063f89

Tints & shades

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

Harmonies

Complementary

Open in tool →

#895006

#068089 · #0e0689

#89063f · #3f8906

Split-complementary

Open in tool →

#890e06 · #808906

#890680 · #895006 · #06890e

Contrast

#063f89 as textRatioAAAA largeAAAFix
Aaon white
10.1:1passpasspassPasses AAA — no fix needed.
Aaon black
2.08:1failfailfail
  • AA: use #0a6ef0 as the text (4.5:1)
  • AAA: use #4f98f8 as the text (7.18:1)
  • AA: or shift the background to #b0b0b0 (4.66:1)
  • AAA: or shift the background to #d9d9d9 (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 #063f89 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#063f89 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #063f89
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 #063f89 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/063f89-9ca9c4-df5a4e-1f1f2d-e9f0f1?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