Color

#18d8cb

#18d8cb
hex#18d8cb
rgbrgb(24, 216, 203)
hslhsl(176, 80%, 47%)
oklchoklch(0.796 0.136 187)
Closest name: mediumturquoise (#48d1cc)Relative luminance 0.5362

Colors that go with #18d8cb

Charcoal, Deep Sky Blue and Blue 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 →

#d81825

#18d86b · #1885d8

#cb18d8 · #d8cb18

Split-complementary

Open in tool →

#d81885 · #d86b18

#6b18d8 · #d81825 · #85d818

Contrast

#18d8cb as textRatioAAAA largeAAAFix
Aaon white
1.79:1failfailfail
  • AA: use #0e8179 as the text (4.74:1)
  • AAA: use #0b605b as the text (7.4:1)
  • AA: or shift the background to #4f4f4f (4.57:1)
  • AAA: or shift the background to #333333 (7.05:1)
Aaon black
11.72:1passpasspassPasses 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 #18d8cb as the background.

Brands using this color

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

mcpConnect your agent — build around #18d8cb
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 #18d8cb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/18d8cb-a2bdbe-d4599d-1f282d-e9f1ed?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