Color

#27aadd

#27aadd
hex#27aadd
rgbrgb(39, 170, 221)
hslhsl(197, 73%, 51%)
oklchoklch(0.693 0.129 230.4)
Closest name: Cousteau (#55a9d6)Relative luminance 0.344

Colors that go with #27aadd

Charcoal, Tomato and Bronze 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 →

#dd5b27

#27ddb6 · #274edd

#dd27aa · #aadd27

Split-complementary

Open in tool →

#dd274e · #ddb627

#b627dd · #dd5b27 · #4edd27

Contrast

#27aadd as textRatioAAAA largeAAAFix
Aaon white
2.66:1failfailfail
  • AA: use #197ca3 as the text (4.72:1)
  • AAA: use #135e7c as the text (7.19:1)
  • AA: or shift the background to #363636 (4.53:1)
  • AAA: or shift the background to #121212 (7.03:1)
Aaon black
7.88:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #27aadd as the background.

Brands using this color

Fonts for this mood

#27aadd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #27aadd
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 #27aadd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/27aadd-9cb4c4-df4e6b-1f232d-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