Color

#18bfdc

#18bfdc
hex#18bfdc
rgbrgb(24, 191, 220)
hslhsl(189, 80%, 48%)
oklchoklch(0.741 0.127 214.1)
Closest name: Blue Bikini (#00bbee)Relative luminance 0.4262

Colors that go with #18bfdc

Charcoal, Dark Orange and Denim 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 →

#dc3618

#18dc98 · #185ddc

#dc18bf · #bfdc18

Split-complementary

Open in tool →

#dc185d · #dc9818

#9818dc · #dc3618 · #5ddc18

Contrast

#18bfdc as textRatioAAAA largeAAAFix
Aaon white
2.2:1failfailfail
  • AA: use #107f93 as the text (4.69:1)
  • AAA: use #0c5f6e as the text (7.3:1)
  • AA: or shift the background to #424242 (4.56:1)
  • AAA: or shift the background to #242424 (7.04:1)
Aaon black
9.52:1passpasspassPasses 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 #18bfdc as the background.

Brands using this color

Fonts for this mood

#18bfdc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #18bfdc
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 #18bfdc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/18bfdc-a2b7be-df4e7e-1f252d-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