Color

#4ffb3c

#4ffb3c
hex#4ffb3c
rgbrgb(79, 251, 60)
hslhsl(114, 96%, 61%)
oklchoklch(0.867 0.264 141.7)
Closest name: Cathode Green (#00ff55)Relative luminance 0.7098

Colors that go with #4ffb3c

Violet, Deep Sky Blue 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 →

#e83cfb

#affb3c · #3cfb88

#3c4ffb · #fb3c4f

Split-complementary

Open in tool →

#883cfb · #fb3caf

#3caffb · #e83cfb · #fb883c

Contrast

#4ffb3c as textRatioAAAA largeAAAFix
Aaon white
1.38:1failfailfail
  • AA: use #108703 as the text (4.68:1)
  • AAA: use #0c6402 as the text (7.4:1)
  • AA: or shift the background to #5e5e5e (4.69:1)
  • AAA: or shift the background to #424242 (7.27:1)
Aaon black
15.2:1passpasspassPasses 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 #4ffb3c 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 #4ffb3c
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 #4ffb3c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4ffb3c-a2bea2-8a4edf-1f2d24-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