Color

#25384b

#25384b
hex#25384b
rgbrgb(37, 56, 75)
hslhsl(210, 34%, 22%)
oklchoklch(0.333 0.042 249.2)
Closest name: Astral Nomad (#203943)Relative luminance 0.0373

Colors that go with #25384b

Dark Olive Green, Sienna and Teal 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 →

#4b3825

#254b4b · #25254b

#4b2538 · #384b25

Split-complementary

Open in tool →

#4b2525 · #4b4b25

#4b254b · #4b3825 · #254b25

Contrast

#25384b as textRatioAAAA largeAAAFix
Aaon white
12.03:1passpasspassPasses AAA — no fix needed.
Aaon black
1.75:1failfailfail
  • AA: use #4f78a1 as the text (4.53:1)
  • AAA: use #7699bc as the text (7.05:1)
  • AA: or shift the background to #a1a1a1 (4.66:1)
  • AAA: or shift the background to #c7c7c7 (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 #25384b as the background.

Brands using this color

Fonts for this mood

#25384b reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #25384b
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 #25384b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/25384b-9cabc4-df514e-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