Color

#f3f4fb

#f3f4fb
hex#f3f4fb
rgbrgb(243, 244, 251)
hslhsl(232, 50%, 97%)
oklchoklch(0.968 0.009 279.7)
Closest name: Cotton Ball (#f2f7fd)Relative luminance 0.9072

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fbfaf4

#f4f8fb · #f6f4fb

#fbf4f5 · #f5fbf4

Split-complementary

Open in tool →

#fbf6f4 · #f8fbf4

#fbf4f8 · #fbfaf4 · #f4fbf6

Contrast

#f3f4fb as textRatioAAAA largeAAAFix
Aaon white
1.1:1failfailfail
  • AA: use #5e6dc9 as the text (4.66:1)
  • AAA: use #3d4eb8 as the text (7.05:1)
  • AA: or shift the background to #707070 (4.51:1)
  • AAA: or shift the background to #525252 (7.12:1)
Aaon black
19.14:1passpasspassPasses 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 #f3f4fb as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#f3f4fb reads as cool, light, clean. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #f3f4fb
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 #f3f4fb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f3f4fb-9c9dc4-df864e-231f2d-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