Color

#def73b

#def73b
hex#def73b
rgbrgb(222, 247, 59)
hslhsl(68, 92%, 60%)
oklchoklch(0.927 0.198 117.3)
Closest name: Banana Flash (#eefe02)Relative luminance 0.8237

Colors that go with #def73b

Charcoal, Crimson and Taupe 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 →

#543bf7

#f7b23b · #80f73b

#3bdef7 · #f73bde

Split-complementary

Open in tool →

#3b80f7 · #b23bf7

#3bf7b2 · #543bf7 · #f73b80

Contrast

#def73b as textRatioAAAA largeAAAFix
Aaon white
1.2:1failfailfail
  • AA: use #6b7a05 as the text (4.76:1)
  • AAA: use #515d04 as the text (7.2:1)
  • AA: or shift the background to #696969 (4.57:1)
  • AAA: or shift the background to #4d4d4d (7.03:1)
Aaon black
17.47:1passpasspassPasses 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 #def73b 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 #def73b
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 #def73b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/def73b-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