Color

#27a540

#27a540
hex#27a540
rgbrgb(39, 165, 64)
hslhsl(132, 62%, 40%)
oklchoklch(0.634 0.177 146)
Closest name: Fennel Fiasco (#00aa44)Relative luminance 0.2771

Colors that go with #27a540

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 →

#a5278c

#4da527 · #27a57f

#4027a5 · #a54027

Split-complementary

Open in tool →

#7f27a5 · #a5274d

#274da5 · #a5278c · #a57f27

Contrast

#27a540 as textRatioAAAA largeAAAFix
Aaon white
3.21:1failpassfail
  • AA: use #208835 as the text (4.53:1)
  • AAA: use #176326 as the text (7.37:1)
  • AA: or shift the background to #292929 (4.53:1)
Aaon black
6.54:1passpassfail
  • AAA: use #29ae43 as the text (7.23:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #27a540 as the background.

Brands using this color

Palettes built around it

mcpConnect your agent — build around #27a540
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 #27a540 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/27a540-a2beab-b64edf-1f2d28-ecf1e9?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