Color

#eff9fa

#eff9fa
hex#eff9fa
rgbrgb(239, 249, 250)
hslhsl(185, 52%, 96%)
oklchoklch(0.975 0.011 204.1)
Closest name: Cold White (#edfcfb)Relative luminance 0.93

Tints & shades

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

Harmonies

Complementary

Open in tool →

#faf0ef

#effaf6 · #eff4fa

#faeff9 · #f9faef

Split-complementary

Open in tool →

#faeff4 · #faf6ef

#f6effa · #faf0ef · #f4faef

Contrast

#eff9fa as textRatioAAAA largeAAAFix
Aaon white
1.07:1failfailfail
  • AA: use #2b8088 as the text (4.62:1)
  • AAA: use #205f65 as the text (7.28:1)
  • AA: or shift the background to #707070 (4.62:1)
  • AAA: or shift the background to #545454 (7.07:1)
Aaon black
19.6:1passpasspassPasses 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 #eff9fa as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#eff9fa reads as cool, light, clean. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #eff9fa
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 #eff9fa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/eff9fa-a2b8be-df4e88-1f262d-e9f1ee?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