Color

#eff452

#eff452
hex#eff452
rgbrgb(239, 244, 82)
hslhsl(62, 88%, 64%)
oklchoklch(0.935 0.178 111.1)
Closest name: Buttercup Glow (#f1f458)Relative luminance 0.8366

Colors that go with #eff452

Lilac, 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 →

#5852f4

#f4a952 · #9ef452

#52eff4 · #f452ef

Split-complementary

Open in tool →

#529ef4 · #a952f4

#52f4a9 · #5852f4 · #f4529e

Contrast

#eff452 as textRatioAAAA largeAAAFix
Aaon white
1.18:1failfailfail
  • AA: use #747808 as the text (4.74:1)
  • AAA: use #585b06 as the text (7.21:1)
  • AA: or shift the background to #696969 (4.64:1)
  • AAA: or shift the background to #4d4d4d (7.14:1)
Aaon black
17.73:1passpasspassPasses 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 #eff452 as the background.

Brands using this color

mcpConnect your agent — build around #eff452
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 #eff452 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/eff452-babea2-4e8fdf-272d1f-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