Color

#aaff42

#aaff42
hex#aaff42
rgbrgb(170, 255, 66)
hslhsl(87, 100%, 63%)
oklchoklch(0.912 0.227 131.2)
Closest name: greenyellow (#adff2f)Relative luminance 0.8046

Colors that go with #aaff42

Violet, Blue and Charcoal 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 →

#9742ff

#fff642 · #4cff42

#42aaff · #ff42aa

Split-complementary

Open in tool →

#424cff · #f642ff

#42fff6 · #9742ff · #ff424c

Contrast

#aaff42 as textRatioAAAA largeAAAFix
Aaon white
1.23:1failfailfail
  • AA: use #498500 as the text (4.53:1)
  • AAA: use #356100 as the text (7.34:1)
  • AA: or shift the background to #666666 (4.67:1)
  • AAA: or shift the background to #4a4a4a (7.21:1)
Aaon black
17.09:1passpasspassPasses 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 #aaff42 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 #aaff42
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 #aaff42 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/aaff42-aebea2-4e53df-212d1f-f1f1e9?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