Color

#0d233a

#0d233a
hex#0d233a
rgbrgb(13, 35, 58)
hslhsl(211, 63%, 14%)
oklchoklch(0.251 0.052 251.5)
Closest name: Midnight Dreams (#002233)Relative luminance 0.0159

Colors that go with #0d233a

Charcoal, Sea Green and Sienna 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 #0d233a

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3a240d

#0d393a · #0e0d3a

#3a0d23 · #233a0d

Split-complementary

Open in tool →

#3a0e0d · #393a0d

#3a0d39 · #3a240d · #0d3a0e

Contrast

#0d233a as textRatioAAAA largeAAAFix
Aaon white
15.93:1passpasspassPasses AAA — no fix needed.
Aaon black
1.32:1failfailfail
  • AA: use #2d78c8 as the text (4.63:1)
  • AAA: use #5d99da as the text (7.03:1)
  • AA: or shift the background to #8a8a8a (4.61:1)
  • AAA: or shift the background to #adadad (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0d233a as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#0d233a reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0d233a
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 #0d233a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0d233a-9cabc4-df534e-1f202d-e9f1f1?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