Color

#255b6a

#255b6a
hex#255b6a
rgbrgb(37, 91, 106)
hslhsl(193, 48%, 28%)
oklchoklch(0.442 0.061 219)
Closest name: Arctic Nights (#345c61)Relative luminance 0.0892

Colors that go with #255b6a

Crimson, Steel Blue 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 →

#6a3425

#256a56 · #25396a

#6a255b · #5b6a25

Split-complementary

Open in tool →

#6a2539 · #6a5625

#56256a · #6a3425 · #396a25

Contrast

#255b6a as textRatioAAAA largeAAAFix
Aaon white
7.55:1passpasspassPasses AAA — no fix needed.
Aaon black
2.78:1failfailfail
  • AA: use #347f93 as the text (4.6:1)
  • AAA: use #42a2bd as the text (7.13:1)
  • AA: or shift the background to #c9c9c9 (4.56:1)
  • AAA: or shift the background to #f7f7f7 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #255b6a as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#255b6a reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #255b6a
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 #255b6a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/255b6a-a2b5be-df4e75-1f242d-e9f1ef?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