Color

#3df505

#3df505
hex#3df505
rgbrgb(61, 245, 5)
hslhsl(106, 96%, 49%)
oklchoklch(0.846 0.278 141)
Closest name: Becquerel (#4bec13)Relative luminance 0.6631

Colors that go with #3df505

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 →

#bd05f5

#b5f505 · #05f545

#053df5 · #f5053d

Split-complementary

Open in tool →

#4505f5 · #f505b5

#05b5f5 · #bd05f5 · #f54505

Contrast

#3df505 as textRatioAAAA largeAAAFix
Aaon white
1.47:1failfailfail
  • AA: use #228703 as the text (4.63:1)
  • AAA: use #196402 as the text (7.33:1)
  • AA: or shift the background to #5c5c5c (4.54:1)
  • AAA: or shift the background to #404040 (7.04:1)
Aaon black
14.26:1passpasspassPasses 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 #3df505 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 #3df505
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 #3df505 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3df505-a5bea2-774edf-1f2d22-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