Color

#37a449

#37a449
hex#37a449
rgbrgb(55, 164, 73)
hslhsl(130, 50%, 43%)
oklchoklch(0.636 0.163 146.2)
Closest name: Fennel Fiasco (#00aa44)Relative luminance 0.2784

Colors that go with #37a449

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 →

#a43792

#5ba437 · #37a480

#4937a4 · #a44937

Split-complementary

Open in tool →

#8037a4 · #a4375b

#375ba4 · #a43792 · #a48037

Contrast

#37a449 as textRatioAAAA largeAAAFix
Aaon white
3.2:1failpassfail
  • AA: use #2d863b as the text (4.58:1)
  • AAA: use #21632c as the text (7.28:1)
  • AA: or shift the background to #292929 (4.55:1)
Aaon black
6.57:1passpassfail
  • AAA: use #39ac4c as the text (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #37a449 as the background.

Brands using this color

Palettes built around it

mcpConnect your agent — build around #37a449
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 #37a449 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/37a449-a2beaa-b14edf-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