Color

#25464b

#25464b
hex#25464b
rgbrgb(37, 70, 75)
hslhsl(188, 34%, 22%)
oklchoklch(0.371 0.04 208.1)
Closest name: Charcoal (#36454f)Relative luminance 0.0528

Colors that go with #25464b

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 →

#4b2a25

#254b3d · #25334b

#4b2546 · #464b25

Split-complementary

Open in tool →

#4b2533 · #4b3d25

#3d254b · #4b2a25 · #334b25

Contrast

#25464b as textRatioAAAA largeAAAFix
Aaon white
10.21:1passpasspassPasses AAA — no fix needed.
Aaon black
2.06:1failfailfail
  • AA: use #437f89 as the text (4.64:1)
  • AAA: use #58a1ad as the text (7.12:1)
  • AA: or shift the background to #adadad (4.55:1)
  • AAA: or shift the background to #d6d6d6 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #25464b as the background.

Brands using this color

Fonts for this mood

#25464b reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #25464b
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 #25464b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/25464b-a2b7be-df4e81-1f252d-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