Color

#6c8ca3

#6c8ca3
hex#6c8ca3
rgbrgb(108, 140, 163)
hslhsl(205, 23%, 53%)
oklchoklch(0.624 0.05 239.8)
Closest name: lightslategray (#778899)Relative luminance 0.2459

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a3836c

#6ca39e · #6c70a3

#a36c8c · #8ca36c

Split-complementary

Open in tool →

#a36c70 · #a39e6c

#9e6ca3 · #a3836c · #70a36c

Contrast

#6c8ca3 as textRatioAAAA largeAAAFix
Aaon white
3.55:1failpassfail
  • AA: use #5a7a90 as the text (4.54:1)
  • AAA: use #435a6b as the text (7.21:1)
  • AA: or shift the background to #212121 (4.54:1)
Aaon black
5.92:1passpassfail
  • AAA: use #7e9aae as the text (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6c8ca3 as the background.

Brands using this color

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

mcpConnect your agent — build around #6c8ca3
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 #6c8ca3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6c8ca3-9cafc4-df4e58-1f212d-e9f1f0?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