Color

#3fa674

#3fa674
hex#3fa674
rgbrgb(63, 166, 116)
hslhsl(151, 45%, 45%)
oklchoklch(0.652 0.122 158.9)
Closest name: Cosmic Green (#30a877)Relative luminance 0.2959

Colors that go with #3fa674

Charcoal, Blue and Crimson 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 →

#a63f71

#3fa641 · #3fa5a6

#743fa6 · #a6743f

Split-complementary

Open in tool →

#a63fa5 · #a6413f

#413fa6 · #a63f71 · #a5a63f

Contrast

#3fa674 as textRatioAAAA largeAAAFix
Aaon white
3.04:1failpassfail
  • AA: use #32855d as the text (4.52:1)
  • AAA: use #266446 as the text (7.01:1)
  • AA: or shift the background to #2b2b2b (4.66:1)
Aaon black
6.92:1passpassfail
  • AAA: use #41aa77 as the text (7.24:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3fa674 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 #3fa674
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 #3fa674 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fa674-a2beb4-d459d0-1f2d2c-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