Color

#43e579

#43e579
hex#43e579
rgbrgb(67, 229, 121)
hslhsl(140, 76%, 58%)
oklchoklch(0.815 0.2 150.1)
Closest name: Grotesque Green (#64e986)Relative luminance 0.5861

Colors that go with #43e579

Deep Sky Blue, Taupe and Violet 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 →

#e543af

#5ee543 · #43e5ca

#7943e5 · #e57943

Split-complementary

Open in tool →

#ca43e5 · #e5435e

#435ee5 · #e543af · #e5ca43

Contrast

#43e579 as textRatioAAAA largeAAAFix
Aaon white
1.65:1failfailfail
  • AA: use #128739 as the text (4.61:1)
  • AAA: use #0e672c as the text (7.01:1)
  • AA: or shift the background to #545454 (4.59:1)
  • AAA: or shift the background to #383838 (7.1:1)
Aaon black
12.72:1passpasspassPasses 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 #43e579 as the background.

Brands using this color

mcpConnect your agent — build around #43e579
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 #43e579 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/43e579-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