Color

#5ace81

#5ace81
hex#5ace81
rgbrgb(90, 206, 129)
hslhsl(140, 54%, 58%)
oklchoklch(0.765 0.153 152.1)
Closest name: Emerald Green (#50c878)Relative luminance 0.479

Colors that go with #5ace81

Charcoal, Blue and Deep Sky 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 →

#ce5aa7

#6dce5a · #5aceba

#815ace · #ce815a

Split-complementary

Open in tool →

#ba5ace · #ce5a6d

#5a6dce · #ce5aa7 · #ceba5a

Contrast

#5ace81 as textRatioAAAA largeAAAFix
Aaon white
1.98:1failfailfail
  • AA: use #288647 as the text (4.57:1)
  • AAA: use #1d6234 as the text (7.37:1)
  • AA: or shift the background to #474747 (4.68:1)
  • AAA: or shift the background to #2b2b2b (7.13:1)
Aaon black
10.58:1passpasspassPasses 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 #5ace81 as the background.

Brands using this color

mcpConnect your agent — build around #5ace81
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 #5ace81 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5ace81-a2beaf-c259d4-1f2d2a-ebf1e9?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