Color

#505977

#505977
hex#505977
rgbrgb(80, 89, 119)
hslhsl(226, 20%, 39%)
oklchoklch(0.468 0.05 271.4)
Closest name: Deep Indigo (#4c567a)Relative luminance 0.1018

Colors that go with #505977

Sea Green, Steel Blue and Blue 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 →

#776e50

#506d77 · #5a5077

#775059 · #597750

Split-complementary

Open in tool →

#775a50 · #6d7750

#77506d · #776e50 · #50775a

Contrast

#505977 as textRatioAAAA largeAAAFix
Aaon white
6.92:1passpassfail
  • AAA: use #4e5774 as the text (7.14:1)
Aaon black
3.04:1failpassfail
  • AA: use #69759b as the text (4.62:1)
  • AAA: use #8e97b4 as the text (7.24:1)
  • AA: or shift the background to #d1d1d1 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #505977 as the background.

Brands using this color

mcpConnect your agent — build around #505977
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 #505977 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/505977-9ca1c4-df774e-221f2d-e9eff1?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