Color

#3ac403

#3ac403
hex#3ac403
rgbrgb(58, 196, 3)
hslhsl(103, 97%, 39%)
oklchoklch(0.718 0.232 140.3)
Closest name: Crude Banana (#21c40e)Relative luminance 0.4039

Colors that go with #3ac403

Blue, 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 →

#8d03c4

#9ac403 · #03c42d

#033ac4 · #c4033a

Split-complementary

Open in tool →

#2d03c4 · #c4039a

#039ac4 · #8d03c4 · #c42d03

Contrast

#3ac403 as textRatioAAAA largeAAAFix
Aaon white
2.31:1failfailfail
  • AA: use #288802 as the text (4.55:1)
  • AAA: use #1e6402 as the text (7.29:1)
  • AA: or shift the background to #3d3d3d (4.7:1)
  • AAA: or shift the background to #1f1f1f (7.12:1)
Aaon black
9.08:1passpasspassPasses 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 #3ac403 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 #3ac403
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 #3ac403 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3ac403-a6bea2-704edf-1f2d21-eff1e9?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