Color

#eff0fb

#eff0fb
hex#eff0fb
rgbrgb(239, 240, 251)
hslhsl(235, 60%, 96%)
oklchoklch(0.958 0.015 282)
Closest name: Foundation White (#efeeff)Relative luminance 0.8764

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fbfaef

#eff6fb · #f4effb

#fbeff0 · #f0fbef

Split-complementary

Open in tool →

#fbf4ef · #f6fbef

#fbeff6 · #fbfaef · #effbf4

Contrast

#eff0fb as textRatioAAAA largeAAAFix
Aaon white
1.13:1failfailfail
  • AA: use #606ad7 as the text (4.63:1)
  • AAA: use #3b47ce as the text (7.05:1)
  • AA: or shift the background to #6b6b6b (4.7:1)
  • AAA: or shift the background to #4f4f4f (7.23:1)
Aaon black
18.53:1passpasspassPasses 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 #eff0fb as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#eff0fb reads as cool, vivid, light. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #eff0fb
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 #eff0fb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/eff0fb-9e9cc4-df8d4e-241f2d-e9eef1?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