Color

#0d338c

#0d338c
hex#0d338c
rgbrgb(13, 51, 140)
hslhsl(222, 83%, 30%)
oklchoklch(0.361 0.154 263.3)
Closest name: Deep Space Royal (#223382)Relative luminance 0.0435

Colors that go with #0d338c

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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8c660d

#0d738c · #260d8c

#8c0d33 · #338c0d

Split-complementary

Open in tool →

#8c260d · #738c0d

#8c0d73 · #8c660d · #0d8c26

Contrast

#0d338c as textRatioAAAA largeAAAFix
Aaon white
11.23:1passpasspassPasses AAA — no fix needed.
Aaon black
1.87:1failfailfail
  • AA: use #366dec as the text (4.56:1)
  • AAA: use #6e96f2 as the text (7.31:1)
  • AA: or shift the background to #a6a6a6 (4.61:1)
  • AAA: or shift the background to #cfcfcf (7.21:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0d338c as the background.

Brands using this color

Fonts for this mood

#0d338c reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0d338c
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 #0d338c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0d338c-9ca3c4-df6e4e-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