CSS color

seashell

#fff5ee
hex#fff5ee
rgbrgb(255, 245, 238)
hslhsl(25, 100%, 97%)
oklchoklch(0.976 0.014 57.6)
Relative luminance 0.9274

Seashell on this page is the real value, not a screenshot: exact hex, RGB, HSL and OKLCH, ten tints and ten shades, classic harmonies, and WCAG contrast with fixes — plus the 11 public brands that use it and the palettes it appears in.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#f0f9ff

#fff0f1 · #fffef0

#f0fff6 · #f6f0ff

Split-complementary

Open in tool →

#f0fffe · #f0f1ff

#f1fff0 · #f0f9ff · #fef0ff

Contrast

seashell as textRatioAAAA largeAAAFix
Aaon white
1.07:1failfailfail
  • AA: use #c75300 as the text (4.5:1)
  • AAA: use #943e00 as the text (7.12:1)
  • AA: or shift the background to #707070 (4.61:1)
  • AAA: or shift the background to #545454 (7.05:1)
Aaon black
19.55:1passpasspassPasses 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 seashell as the background.

Brands using this color

Palettes built around it

Fonts for this mood

seashell reads as warm, vivid, light. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around seashell
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 #fff5ee and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/fff5ee-c4b19c-62cbc4-2d2b1f-f1e9ea?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