Color

#4ef425

#4ef425
hex#4ef425
rgbrgb(78, 244, 37)
hslhsl(108, 90%, 55%)
oklchoklch(0.848 0.266 140.7)
Closest name: Becquerel (#4bec13)Relative luminance 0.6645

Colors that go with #4ef425

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 →

#ca25f4

#b6f425 · #25f463

#254ef4 · #f4254e

Split-complementary

Open in tool →

#6325f4 · #f425b6

#25b6f4 · #ca25f4 · #f46325

Contrast

#4ef425 as textRatioAAAA largeAAAFix
Aaon white
1.47:1failfailfail
  • AA: use #218807 as the text (4.58:1)
  • AAA: use #196605 as the text (7.13:1)
  • AA: or shift the background to #5c5c5c (4.55:1)
  • AAA: or shift the background to #404040 (7.06:1)
Aaon black
14.29:1passpasspassPasses 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 #4ef425 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 #4ef425
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 #4ef425 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4ef425-a4bea2-7c4edf-1f2d23-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