Color

#6d99ab

#6d99ab
hex#6d99ab
rgbrgb(109, 153, 171)
hslhsl(197, 27%, 55%)
oklchoklch(0.658 0.055 225.3)
Closest name: Cavolo Nero (#72939e)Relative luminance 0.2897

Colors that go with #6d99ab

Charcoal, Peru and Blush Pink lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Real palettes that use #6d99ab

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ab7f6d

#6dab9e · #6d7bab

#ab6d9a · #9aab6d

Split-complementary

Open in tool →

#ab6d7b · #ab9e6d

#9e6dab · #ab7f6d · #7bab6d

Contrast

#6d99ab as textRatioAAAA largeAAAFix
Aaon white
3.09:1failpassfail
  • AA: use #507a8b as the text (4.67:1)
  • AAA: use #3c5b68 as the text (7.27:1)
  • AA: or shift the background to #2b2b2b (4.58:1)
Aaon black
6.79:1passpassfail
  • AAA: use #719cad as the text (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6d99ab 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 #6d99ab
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #6d99ab and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6d99ab-9cb4c4-df4e6b-1f232d-e9f1ef?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