Color

#25484b

#25484b
hex#25484b
rgbrgb(37, 72, 75)
hslhsl(185, 34%, 22%)
oklchoklch(0.377 0.041 202.8)
Closest name: Charcoal (#36454f)Relative luminance 0.0554

Colors that go with #25484b

Steel Blue, Teal and Rust 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 →

#4b2825

#254b3b · #25354b

#4b2548 · #484b25

Split-complementary

Open in tool →

#4b2535 · #4b3b25

#3b254b · #4b2825 · #354b25

Contrast

#25484b as textRatioAAAA largeAAAFix
Aaon white
9.97:1passpasspassPasses AAA — no fix needed.
Aaon black
2.11:1failfailfail
  • AA: use #428085 as the text (4.66:1)
  • AAA: use #54a4ab as the text (7.28:1)
  • AA: or shift the background to #b0b0b0 (4.6:1)
  • AAA: or shift the background to #d9d9d9 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #25484b as the background.

Brands using this color

Fonts for this mood

#25484b reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #25484b
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 #25484b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/25484b-a2b8be-df4e88-1f262d-e9f1ee?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