Color

#def54d

#def54d
hex#def54d
rgbrgb(222, 245, 77)
hslhsl(68, 89%, 63%)
oklchoklch(0.924 0.186 117)
Closest name: Buttercup Glow (#f1f458)Relative luminance 0.8137

Colors that go with #def54d

Plum, 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 →

#634df5

#f5b74d · #8af54d

#4ddef5 · #f54dde

Split-complementary

Open in tool →

#4d8af5 · #b74df5

#4df5b7 · #634df5 · #f54d8a

Contrast

#def54d as textRatioAAAA largeAAAFix
Aaon white
1.22:1failfailfail
  • AA: use #6e7d07 as the text (4.57:1)
  • AAA: use #505c05 as the text (7.31:1)
  • AA: or shift the background to #696969 (4.52:1)
  • AAA: or shift the background to #4a4a4a (7.29:1)
Aaon black
17.27:1passpasspassPasses 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 #def54d 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 #def54d
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 #def54d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/def54d-b7bea2-4e81df-252d1f-f1eee9?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