Color

#ecef48

#ecef48
hex#ecef48
rgbrgb(236, 239, 72)
hslhsl(61, 84%, 61%)
oklchoklch(0.922 0.179 110.5)
Closest name: Buttercup Glow (#f1f458)Relative luminance 0.8003

Colors that go with #ecef48

Lilac, Charcoal and Crimson 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 →

#4b48ef

#ef9e48 · #99ef48

#48ecef · #ef48ec

Split-complementary

Open in tool →

#4899ef · #9e48ef

#48ef9e · #4b48ef · #ef4899

Contrast

#ecef48 as textRatioAAAA largeAAAFix
Aaon white
1.23:1failfailfail
  • AA: use #787a0b as the text (4.58:1)
  • AAA: use #585908 as the text (7.38:1)
  • AA: or shift the background to #666666 (4.65:1)
  • AAA: or shift the background to #4a4a4a (7.18:1)
Aaon black
17.01:1passpasspassPasses 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 #ecef48 as the background.

Brands using this color

mcpConnect your agent — build around #ecef48
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 #ecef48 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ecef48-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