Color

#3c9f4b

#3c9f4b
hex#3c9f4b
rgbrgb(60, 159, 75)
hslhsl(129, 45%, 43%)
oklchoklch(0.625 0.152 146.2)
Closest name: Golf Course (#5a9e4b)Relative luminance 0.2626

Colors that go with #3c9f4b

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 →

#9f3c90

#5f9f3c · #3c9f7c

#4b3c9f · #9f4b3c

Split-complementary

Open in tool →

#7c3c9f · #9f3c5f

#3c5f9f · #9f3c90 · #9f7c3c

Contrast

#3c9f4b as textRatioAAAA largeAAAFix
Aaon white
3.36:1failpassfail
  • AA: use #32853f as the text (4.6:1)
  • AAA: use #26642f as the text (7.13:1)
  • AA: or shift the background to #262626 (4.51:1)
Aaon black
6.25:1passpassfail
  • AAA: use #41aa50 as the text (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3c9f4b as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

mcpConnect your agent — build around #3c9f4b
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 #3c9f4b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3c9f4b-a2bea9-ae4edf-1f2d27-ecf1e9?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