Color

#0d408c

#0d408c
hex#0d408c
rgbrgb(13, 64, 140)
hslhsl(216, 83%, 30%)
oklchoklch(0.389 0.137 259.3)
Closest name: Cascade Twilight (#234893)Relative luminance 0.0565

Colors that go with #0d408c

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 #0d408c

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8c590d

#0d7f8c · #1a0d8c

#8c0d40 · #408c0d

Split-complementary

Open in tool →

#8c1a0d · #7f8c0d

#8c0d7f · #8c590d · #0d8c1a

Contrast

#0d408c as textRatioAAAA largeAAAFix
Aaon white
9.86:1passpasspassPasses AAA — no fix needed.
Aaon black
2.13:1failfailfail
  • AA: use #1f70ea as the text (4.56:1)
  • AAA: use #5c97f0 as the text (7.14:1)
  • AA: or shift the background to #b0b0b0 (4.55:1)
  • AAA: or shift the background to #dbdbdb (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0d408c as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#0d408c reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0d408c
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 #0d408c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0d408c-9ca7c4-df5f4e-201f2d-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