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

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 — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

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