Color

#0d133b

#0d133b
hex#0d133b
rgbrgb(13, 19, 59)
hslhsl(232, 64%, 14%)
oklchoklch(0.211 0.077 271.6)
Closest name: Infinite Night (#071037)Relative luminance 0.0087

Colors that go with #0d133b

Charcoal, Dark Olive Green and Sea Green 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 →

#3b340d

#0d2a3b · #1e0d3b

#3b0d13 · #133b0d

Split-complementary

Open in tool →

#3b1e0d · #2a3b0d

#3b0d2a · #3b340d · #0d3b1e

Contrast

#0d133b as textRatioAAAA largeAAAFix
Aaon white
17.9:1passpasspassPasses AAA — no fix needed.
Aaon black
1.17:1failfailfail
  • AA: use #5c6ddb as the text (4.67:1)
  • AAA: use #8692e4 as the text (7.25:1)
  • AA: or shift the background to #808080 (4.53:1)
  • AAA: or shift the background to #a3a3a3 (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 #0d133b as the background.

Brands using this color

Fonts for this mood

#0d133b reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0d133b
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 #0d133b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0d133b-9c9dc4-df864e-231f2d-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