Color

#63798c

#63798c
hex#63798c
rgbrgb(99, 121, 140)
hslhsl(208, 17%, 47%)
oklchoklch(0.566 0.039 244.6)
Closest name: Citadel (#6a7f8b)Relative luminance 0.1822

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8c7663

#638c8b · #63658c

#8c6379 · #798c63

Split-complementary

Open in tool →

#8c6365 · #8c8b63

#8b638c · #8c7663 · #658c63

Contrast

#63798c as textRatioAAAA largeAAAFix
Aaon white
4.52:1passpassfail
  • AAA: use #4a5a68 as the text (7.11:1)
Aaon black
4.64:1passpassfail
  • AAA: use #8598a8 as the text (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #63798c as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

mcpConnect your agent — build around #63798c
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 #63798c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/63798c-9cadc4-df4e51-1f212d-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