Color

#255e65

#255e65
hex#255e65
rgbrgb(37, 94, 101)
hslhsl(187, 46%, 27%)
oklchoklch(0.447 0.06 206.3)
Closest name: Arctic Nights (#345c61)Relative luminance 0.0934

Colors that go with #255e65

Steel Blue, Rust and Cadet Blue 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 #255e65

Tints & shades

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

Harmonies

Complementary

Open in tool →

#652d25

#25654c · #253d65

#65255d · #5d6525

Split-complementary

Open in tool →

#65253d · #654c25

#4c2565 · #652d25 · #3d6525

Contrast

#255e65 as textRatioAAAA largeAAAFix
Aaon white
7.32:1passpasspassPasses AAA — no fix needed.
Aaon black
2.87:1failfailfail
  • AA: use #33808a as the text (4.6:1)
  • AAA: use #41a2af as the text (7.01:1)
  • AA: or shift the background to #cccccc (4.56:1)
  • AAA: or shift the background to #fafafa (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #255e65 as the background.

Brands using this color

Fonts for this mood

#255e65 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #255e65
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 #255e65 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/255e65-a2b8be-df4e83-1f262d-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