Color

#27a7dd

#27a7dd
hex#27a7dd
rgbrgb(39, 167, 221)
hslhsl(198, 73%, 51%)
oklchoklch(0.686 0.131 232.4)
Closest name: Cousteau (#55a9d6)Relative luminance 0.3329

Colors that go with #27a7dd

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 →

#dd5e27

#27ddb9 · #274bdd

#dd27a7 · #a7dd27

Split-complementary

Open in tool →

#dd274b · #ddb927

#b927dd · #dd5e27 · #4bdd27

Contrast

#27a7dd as textRatioAAAA largeAAAFix
Aaon white
2.74:1failfailfail
  • AA: use #1a7da8 as the text (4.62:1)
  • AAA: use #135c7c as the text (7.37:1)
  • AA: or shift the background to #333333 (4.61:1)
  • AAA: or shift the background to #0d0d0d (7.09:1)
Aaon black
7.66:1passpasspassPasses 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 #27a7dd as the background.

Brands using this color

Fonts for this mood

#27a7dd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #27a7dd
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 #27a7dd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/27a7dd-9cb3c4-df4e69-1f232d-e9f1f0?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