Color

#37fb4e

#37fb4e
hex#37fb4e
rgbrgb(55, 251, 78)
hslhsl(127, 96%, 60%)
oklchoklch(0.864 0.26 144.2)
Closest name: Cathode Green (#00ff55)Relative luminance 0.7036

Colors that go with #37fb4e

Violet, Hot Pink and Plum 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.

Real palettes that use #37fb4e

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#fb37e4

#82fb37 · #37fbb0

#4e37fb · #fb4e37

Split-complementary

Open in tool →

#b037fb · #fb3782

#3782fb · #fb37e4 · #fbb037

Contrast

#37fb4e as textRatioAAAA largeAAAFix
Aaon white
1.39:1failfailfail
  • AA: use #038712 as the text (4.69:1)
  • AAA: use #02640d as the text (7.42:1)
  • AA: or shift the background to #5e5e5e (4.65:1)
  • AAA: or shift the background to #424242 (7.21:1)
Aaon black
15.07:1passpasspassPasses 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 #37fb4e 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 #37fb4e
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 #37fb4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/37fb4e-a2bea8-aa4edf-1f2d27-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