Color

#4ff00a

#4ff00a
hex#4ff00a
rgbrgb(79, 240, 10)
hslhsl(102, 92%, 49%)
oklchoklch(0.838 0.267 139.9)
Closest name: Becquerel (#4bec13)Relative luminance 0.64

Colors that go with #4ff00a

Deep Sky Blue, Violet and Hot Pink 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 →

#ab0af0

#c2f00a · #0af038

#0a4ff0 · #f00a4f

Split-complementary

Open in tool →

#380af0 · #f00ac2

#0ac2f0 · #ab0af0 · #f0380a

Contrast

#4ff00a as textRatioAAAA largeAAAFix
Aaon white
1.52:1failfailfail
  • AA: use #2c8406 as the text (4.76:1)
  • AAA: use #206204 as the text (7.47:1)
  • AA: or shift the background to #595959 (4.6:1)
  • AAA: or shift the background to #3d3d3d (7.14:1)
Aaon black
13.8:1passpasspassPasses 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 #4ff00a 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 #4ff00a
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 #4ff00a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4ff00a-a7bea2-6e4edf-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