Color

#37fb3e

#37fb3e
hex#37fb3e
rgbrgb(55, 251, 62)
hslhsl(122, 96%, 60%)
oklchoklch(0.863 0.269 143.1)
Closest name: Cathode Green (#00ff55)Relative luminance 0.7015

Colors that go with #37fb3e

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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fb37f4

#92fb37 · #37fba0

#3e37fb · #fb3e37

Split-complementary

Open in tool →

#a037fb · #fb3792

#3792fb · #fb37f4 · #fba037

Contrast

#37fb3e as textRatioAAAA largeAAAFix
Aaon white
1.4:1failfailfail
  • AA: use #038707 as the text (4.7:1)
  • AAA: use #026405 as the text (7.43:1)
  • AA: or shift the background to #5e5e5e (4.64:1)
  • AAA: or shift the background to #424242 (7.19:1)
Aaon black
15.03:1passpasspassPasses 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 #37fb3e 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 #37fb3e
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 #37fb3e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/37fb3e-a2bea6-9e4edf-1f2d26-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