Color

#3fb80f

#3fb80f
hex#3fb80f
rgbrgb(63, 184, 15)
hslhsl(103, 85%, 39%)
oklchoklch(0.688 0.216 139.7)
Closest name: Green Glimmer (#00bb00)Relative luminance 0.3537

Colors that go with #3fb80f

Taupe, Orchid and Hot Pink 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 →

#880fb8

#93b80f · #0fb834

#0f3fb8 · #b80f3f

Split-complementary

Open in tool →

#340fb8 · #b80f93

#0f93b8 · #880fb8 · #b8340f

Contrast

#3fb80f as textRatioAAAA largeAAAFix
Aaon white
2.6:1failfailfail
  • AA: use #2d840b as the text (4.75:1)
  • AAA: use #226308 as the text (7.35:1)
  • AA: or shift the background to #383838 (4.51:1)
  • AAA: or shift the background to #141414 (7.08:1)
Aaon black
8.07:1passpasspassPasses 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 #3fb80f 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 #3fb80f
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 #3fb80f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fb80f-a6bea2-704edf-1f2d21-eff1e9?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