Color

#3fd975

#3fd975
hex#3fd975
rgbrgb(63, 217, 117)
hslhsl(141, 67%, 55%)
oklchoklch(0.783 0.189 150.6)
Closest name: Envy’s Love (#2dd78d)Relative luminance 0.5197

Colors that go with #3fd975

Blue, Charcoal and Deep Sky Blue 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 →

#d93fa3

#56d93f · #3fd9c2

#753fd9 · #d9753f

Split-complementary

Open in tool →

#c23fd9 · #d93f56

#3f56d9 · #d93fa3 · #d9c23f

Contrast

#3fd975 as textRatioAAAA largeAAAFix
Aaon white
1.84:1failfailfail
  • AA: use #1b8841 as the text (4.52:1)
  • AAA: use #146631 as the text (7.06:1)
  • AA: or shift the background to #4d4d4d (4.59:1)
  • AAA: or shift the background to #303030 (7.16:1)
Aaon black
11.39:1passpasspassPasses 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 #3fd975 as the background.

Brands using this color

mcpConnect your agent — build around #3fd975
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 #3fd975 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fd975-a2beaf-c459d4-1f2d2a-eaf1e9?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