Color

#3af519

#3af519
hex#3af519
rgbrgb(58, 245, 25)
hslhsl(111, 92%, 53%)
oklchoklch(0.846 0.275 141.5)
Closest name: Becquerel (#4bec13)Relative luminance 0.6627

Colors that go with #3af519

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 →

#d419f5

#a8f519 · #19f566

#193af5 · #f5193a

Split-complementary

Open in tool →

#6619f5 · #f519a8

#19a8f5 · #d419f5 · #f56619

Contrast

#3af519 as textRatioAAAA largeAAAFix
Aaon white
1.47:1failfailfail
  • AA: use #198906 as the text (4.54:1)
  • AAA: use #136704 as the text (7.07:1)
  • AA: or shift the background to #5c5c5c (4.54:1)
  • AAA: or shift the background to #404040 (7.04:1)
Aaon black
14.25:1passpasspassPasses 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 #3af519 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 #3af519
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 #3af519 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3af519-a3bea2-834edf-1f2d23-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