Color

#effbfb

#effbfb
hex#effbfb
rgbrgb(239, 251, 251)
hslhsl(180, 60%, 96%)
oklchoklch(0.979 0.013 196.9)
Closest name: Cold White (#edfcfb)Relative luminance 0.9431

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fbefef

#effbf5 · #eff5fb

#fbeffb · #fbfbef

Split-complementary

Open in tool →

#fbeff5 · #fbf5ef

#f5effb · #fbefef · #f5fbef

Contrast

#effbfb as textRatioAAAA largeAAAFix
Aaon white
1.06:1failfailfail
  • AA: use #218383 as the text (4.53:1)
  • AAA: use #186262 as the text (7.09:1)
  • AA: or shift the background to #707070 (4.68:1)
  • AAA: or shift the background to #545454 (7.16:1)
Aaon black
19.86:1passpasspassPasses 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 #effbfb as the background.

Brands using this color

Palettes built around it

Fonts for this mood

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

mcpConnect your agent — build around #effbfb
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #effbfb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/effbfb-a2bbbe-d45994-1f272d-e9f1ed?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