Color

#3df529

#3df529
hex#3df529
rgbrgb(61, 245, 41)
hslhsl(114, 91%, 56%)
oklchoklch(0.847 0.27 141.8)
Closest name: Becquerel (#4bec13)Relative luminance 0.6646

Colors that go with #3df529

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 →

#e029f5

#a3f529 · #29f57a

#293df5 · #f5293d

Split-complementary

Open in tool →

#7a29f5 · #f529a3

#29a3f5 · #e029f5 · #f57a29

Contrast

#3df529 as textRatioAAAA largeAAAFix
Aaon white
1.47:1failfailfail
  • AA: use #138806 as the text (4.61:1)
  • AAA: use #0f6605 as the text (7.18:1)
  • 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 #3df529 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 #3df529
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 #3df529 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3df529-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