Color

#18aa77

#18aa77
hex#18aa77
rgbrgb(24, 170, 119)
hslhsl(159, 75%, 38%)
oklchoklch(0.655 0.138 162.5)
Closest name: Cosmic Green (#30a877)Relative luminance 0.3028

Colors that go with #18aa77

Charcoal, Blue and Crimson 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 →

#aa184b

#18aa2e · #1894aa

#7718aa · #aa7718

Split-complementary

Open in tool →

#aa1894 · #aa2e18

#2e18aa · #aa184b · #94aa18

Contrast

#18aa77 as textRatioAAAA largeAAAFix
Aaon white
2.98:1failfailfail
  • AA: use #13865e as the text (4.57:1)
  • AAA: use #0e6245 as the text (7.36:1)
  • AA: or shift the background to #2e2e2e (4.56:1)
  • AAA: or shift the background to #000000 (7.06:1)
Aaon black
7.06:1passpasspassPasses 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 #18aa77 as the background.

Brands using this color

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

Palettes built around it

mcpConnect your agent — build around #18aa77
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 #18aa77 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/18aa77-a2beb8-d459c0-1f2c2d-e9f1eb?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