Color

#8399aa

#8399aa
hex#8399aa
rgbrgb(131, 153, 170)
hslhsl(206, 19%, 59%)
oklchoklch(0.672 0.035 241.3)
Closest name: Blank Stare (#8b9cac)Relative luminance 0.3051

Colors that go with #8399aa

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 #8399aa

Tints & shades

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

Harmonies

Complementary

Open in tool →

#aa9483

#83aaa8 · #8385aa

#aa8399 · #99aa83

Split-complementary

Open in tool →

#aa8385 · #aaa883

#a883aa · #aa9483 · #85aa83

Contrast

#8399aa as textRatioAAAA largeAAAFix
Aaon white
2.96:1failfailfail
  • AA: use #5f788c as the text (4.61:1)
  • AAA: use #465967 as the text (7.28:1)
  • AA: or shift the background to #2e2e2e (4.59:1)
  • AAA: or shift the background to #000000 (7.1:1)
Aaon black
7.1:1passpasspassPasses 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 #8399aa 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 #8399aa
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 #8399aa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/8399aa-9caec4-df4e56-1f212d-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