Color

#eff5fa

#eff5fa
hex#eff5fa
rgbrgb(239, 245, 250)
hslhsl(207, 52%, 96%)
oklchoklch(0.967 0.009 242.8)
Closest name: Cotton Ball (#f2f7fd)Relative luminance 0.9056

Tints & shades

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

Harmonies

Complementary

Open in tool →

#faf4ef

#effafa · #eff0fa

#faeff5 · #f5faef

Split-complementary

Open in tool →

#faeff0 · #fafaef

#faeffa · #faf4ef · #f0faef

Contrast

#eff5fa as textRatioAAAA largeAAAFix
Aaon white
1.1:1failfailfail
  • AA: use #387bb2 as the text (4.52:1)
  • AAA: use #2a5b84 as the text (7.17:1)
  • AA: or shift the background to #707070 (4.51:1)
  • AAA: or shift the background to #525252 (7.11:1)
Aaon black
19.11:1passpasspassPasses 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 #eff5fa as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#eff5fa reads as cool, light, clean. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #eff5fa
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 #eff5fa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/eff5fa-9cadc4-df4e53-1f212d-e9f1f1?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