Color

#aef81b

#aef81b
hex#aef81b
rgbrgb(174, 248, 27)
hslhsl(80, 94%, 54%)
oklchoklch(0.897 0.231 128.5)
Closest name: greenyellow (#adff2f)Relative luminance 0.7621

Colors that go with #aef81b

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 →

#651bf8

#f8d31b · #40f81b

#1baef8 · #f81bae

Split-complementary

Open in tool →

#1b40f8 · #d31bf8

#1bf8d3 · #651bf8 · #f81b40

Contrast

#aef81b as textRatioAAAA largeAAAFix
Aaon white
1.29:1failfailfail
  • AA: use #578104 as the text (4.62:1)
  • AAA: use #405e03 as the text (7.45:1)
  • AA: or shift the background to #636363 (4.65:1)
  • AAA: or shift the background to #474747 (7.19:1)
Aaon black
16.24:1passpasspassPasses 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 #aef81b 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 #aef81b
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 #aef81b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/aef81b-b1bea2-4e64df-232d1f-f1f0e9?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