Color

#effbf4

#effbf4
hex#effbf4
rgbrgb(239, 251, 244)
hslhsl(145, 60%, 96%)
oklchoklch(0.977 0.016 160.6)
Closest name: Cold White (#edfcfb)Relative luminance 0.9388

Colors that go with #effbf4

Charcoal, Amber 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.

Real palettes that use #effbf4

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#fbeff6

#f0fbef · #effbfa

#f4effb · #fbf4ef

Split-complementary

Open in tool →

#faeffb · #fbeff0

#eff0fb · #fbeff6 · #fbfaef

Contrast

#effbf4 as textRatioAAAA largeAAAFix
Aaon white
1.06:1failfailfail
  • AA: use #22874c as the text (4.53:1)
  • AAA: use #186237 as the text (7.39:1)
  • AA: or shift the background to #707070 (4.66:1)
  • AAA: or shift the background to #545454 (7.13:1)
Aaon black
19.78:1passpasspassPasses 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 #effbf4 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#effbf4 reads as vivid, light, clean. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #effbf4
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 #effbf4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/effbf4-a2beb1-cc59d4-1f2d2b-eaf1e9?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