Color

#3bf751

#3bf751
hex#3bf751
rgbrgb(59, 247, 81)
hslhsl(127, 92%, 60%)
oklchoklch(0.854 0.253 144.4)
Closest name: Cathode Green (#00ff55)Relative luminance 0.6805

Colors that go with #3bf751

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 →

#f73be1

#83f73b · #3bf7af

#513bf7 · #f7513b

Split-complementary

Open in tool →

#af3bf7 · #f73b83

#3b83f7 · #f73be1 · #f7af3b

Contrast

#3bf751 as textRatioAAAA largeAAAFix
Aaon white
1.44:1failfailfail
  • AA: use #068915 as the text (4.57:1)
  • AAA: use #046710 as the text (7.11:1)
  • AA: or shift the background to #5e5e5e (4.51:1)
  • AAA: or shift the background to #404040 (7.21:1)
Aaon black
14.61:1passpasspassPasses 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 #3bf751 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 #3bf751
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 #3bf751 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3bf751-a2bea8-aa4edf-1f2d27-ecf1e9?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