Color

#27b4e7

#27b4e7
hex#27b4e7
rgbrgb(39, 180, 231)
hslhsl(196, 80%, 53%)
oklchoklch(0.722 0.133 228.8)
Closest name: Blue Bikini (#00bbee)Relative luminance 0.3884

Colors that go with #27b4e7

Charcoal, Amber and Dark Orange 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 →

#e75a27

#27e7ba · #2754e7

#e727b4 · #b4e727

Split-complementary

Open in tool →

#e72754 · #e7ba27

#ba27e7 · #e75a27 · #54e727

Contrast

#27b4e7 as textRatioAAAA largeAAAFix
Aaon white
2.39:1failfailfail
  • AA: use #127ea5 as the text (4.61:1)
  • AAA: use #0e5f7c as the text (7.13:1)
  • AA: or shift the background to #3d3d3d (4.54:1)
  • AAA: or shift the background to #1c1c1c (7.12:1)
Aaon black
8.77:1passpasspassPasses 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 #27b4e7 as the background.

Brands using this color

Fonts for this mood

#27b4e7 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #27b4e7
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 #27b4e7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/27b4e7-9cb5c4-df4e6e-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