Color

#3fa67b

#3fa67b
hex#3fa67b
rgbrgb(63, 166, 123)
hslhsl(155, 45%, 45%)
oklchoklch(0.654 0.116 162.5)
Closest name: Cosmic Green (#30a877)Relative luminance 0.2976

Colors that go with #3fa67b

Charcoal, Crimson and Denim 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 →

#a63f6a

#3fa648 · #3f9ea6

#7b3fa6 · #a67b3f

Split-complementary

Open in tool →

#a63f9e · #a6483f

#483fa6 · #a63f6a · #9ea63f

Contrast

#3fa67b as textRatioAAAA largeAAAFix
Aaon white
3.02:1failpassfail
  • AA: use #318160 as the text (4.73:1)
  • AAA: use #246047 as the text (7.4:1)
  • AA: or shift the background to #2b2b2b (4.69:1)
Aaon black
6.95:1passpassfail
  • AAA: use #41aa7e as the text (7.28:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3fa67b 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 #3fa67b
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 #3fa67b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fa67b-a2beb6-d459c8-1f2d2d-e9f1ea?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