Color

#ecef52

#ecef52
hex#ecef52
rgbrgb(236, 239, 82)
hslhsl(61, 83%, 63%)
oklchoklch(0.922 0.173 110.4)
Closest name: Buttercup Glow (#f1f458)Relative luminance 0.8018

Colors that go with #ecef52

Charcoal, Lilac and Blue 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 →

#5552ef

#efa352 · #9eef52

#52ecef · #ef52ec

Split-complementary

Open in tool →

#529eef · #a352ef

#52efa3 · #5552ef · #ef529e

Contrast

#ecef52 as textRatioAAAA largeAAAFix
Aaon white
1.23:1failfailfail
  • AA: use #77790b as the text (4.64:1)
  • AAA: use #575908 as the text (7.4:1)
  • AA: or shift the background to #666666 (4.66:1)
  • AAA: or shift the background to #4a4a4a (7.19:1)
Aaon black
17.04:1passpasspassPasses 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 #ecef52 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 #ecef52
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 #ecef52 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ecef52-babea2-4e92df-272d1f-f1ede9?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