Color

#3fa928

#3fa928
hex#3fa928
rgbrgb(63, 169, 40)
hslhsl(109, 62%, 41%)
oklchoklch(0.649 0.19 140.6)
Closest name: Botanical Garden (#44aa11)Relative luminance 0.2959

Colors that go with #3fa928

Blue, Dodger Blue and Royal 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 →

#9228a9

#80a928 · #28a951

#283fa9 · #a9283f

Split-complementary

Open in tool →

#5128a9 · #a92880

#2880a9 · #9228a9 · #a95128

Contrast

#3fa928 as textRatioAAAA largeAAAFix
Aaon white
3.04:1failpassfail
  • AA: use #32841f as the text (4.71:1)
  • AAA: use #256317 as the text (7.3:1)
  • AA: or shift the background to #2b2b2b (4.66:1)
Aaon black
6.92:1passpassfail
  • AAA: use #41ae29 as the text (7.31:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3fa928 as the background.

Brands using this color

mcpConnect your agent — build around #3fa928
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 #3fa928 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fa928-a4bea2-7e4edf-1f2d23-eef1e9?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