Color

#37a437

#37a437
hex#37a437
rgbrgb(55, 164, 55)
hslhsl(120, 50%, 43%)
oklchoklch(0.634 0.177 143.1)
Closest name: Fennel Fiasco (#00aa44)Relative luminance 0.2764

Colors that go with #37a437

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 →

#a437a4

#6ea437 · #37a46e

#3737a4 · #a43737

Split-complementary

Open in tool →

#6e37a4 · #a4376e

#376ea4 · #a437a4 · #a46e37

Contrast

#37a437 as textRatioAAAA largeAAAFix
Aaon white
3.22:1failpassfail
  • AA: use #2d862d as the text (4.61:1)
  • AAA: use #216321 as the text (7.31:1)
  • AA: or shift the background to #292929 (4.52:1)
Aaon black
6.53:1passpassfail
  • AAA: use #39ac39 as the text (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #37a437 as the background.

Brands using this color

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

mcpConnect your agent — build around #37a437
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 #37a437 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/37a437-a2bea5-994edf-1f2d25-edf1e9?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