Color

#3ac01b

#3ac01b
hex#3ac01b
rgbrgb(58, 192, 27)
hslhsl(109, 75%, 43%)
oklchoklch(0.708 0.222 140.8)
Closest name: Crude Banana (#21c40e)Relative luminance 0.3868

Colors that go with #3ac01b

Charcoal, Royal Blue and Taupe 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 →

#a21bc0

#8cc01b · #1bc04f

#1b3ac0 · #c01b3a

Split-complementary

Open in tool →

#4f1bc0 · #c01b8c

#1b8cc0 · #a21bc0 · #c04f1b

Contrast

#3ac01b as textRatioAAAA largeAAAFix
Aaon white
2.4:1failfailfail
  • AA: use #288613 as the text (4.66:1)
  • AAA: use #1d620e as the text (7.48:1)
  • AA: or shift the background to #3d3d3d (4.52:1)
  • AAA: or shift the background to #1c1c1c (7.09:1)
Aaon black
8.74:1passpasspassPasses 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 #3ac01b 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 #3ac01b
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 #3ac01b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3ac01b-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