Color

#50818b

#50818b
hex#50818b
rgbrgb(80, 129, 139)
hslhsl(190, 27%, 43%)
oklchoklch(0.572 0.055 212)
Closest name: Arctic (#648589)Relative luminance 0.1927

Colors that go with #50818b

Charcoal, Copper and Sienna 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8b5a50

#508b78 · #50648b

#8b5081 · #818b50

Split-complementary

Open in tool →

#8b5064 · #8b7850

#78508b · #8b5a50 · #648b50

Contrast

#50818b as textRatioAAAA largeAAAFix
Aaon white
4.33:1failpassfail
  • AA: use #4e7e88 as the text (4.5:1)
  • AAA: use #3a5d64 as the text (7.17:1)
  • AA: or shift the background to #0a0a0a (4.58:1)
Aaon black
4.85:1passpassfail
  • AAA: use #6a9fa9 as the text (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #50818b 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 #50818b
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 #50818b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/50818b-a2b6be-df4e7c-1f252d-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