Color

#5b807c

#5b807c
hex#5b807c
rgbrgb(91, 128, 124)
hslhsl(174, 17%, 43%)
oklchoklch(0.571 0.042 187.7)
Closest name: Ecological (#677f70)Relative luminance 0.1912

Colors that go with #5b807c

Charcoal, Copper and Champagne 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 #5b807c

Tints & shades

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

Harmonies

Complementary

Open in tool →

#805b5f

#5b806a · #5b7180

#7d5b80 · #807d5b

Split-complementary

Open in tool →

#805b71 · #806a5b

#6a5b80 · #805b5f · #71805b

Contrast

#5b807c as textRatioAAAA largeAAAFix
Aaon white
4.35:1failpassfail
  • AA: use #597d7a as the text (4.53:1)
  • AAA: use #425c5a as the text (7.22:1)
  • AA: or shift the background to #0a0a0a (4.55:1)
Aaon black
4.82:1passpassfail
  • AAA: use #769e9a as the text (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5b807c 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 #5b807c
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 #5b807c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5b807c-a2bebe-d459a1-1f292d-e9f1ed?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