Color

#587e8d

#587e8d
hex#587e8d
rgbrgb(88, 126, 141)
hslhsl(197, 23%, 45%)
oklchoklch(0.57 0.048 224.5)
Closest name: Citadel (#6a7f8b)Relative luminance 0.1892

Colors that go with #587e8d

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.

Real palettes that use #587e8d

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8d6758

#588d82 · #58648d

#8d587e · #7e8d58

Split-complementary

Open in tool →

#8d5864 · #8d8258

#82588d · #8d6758 · #648d58

Contrast

#587e8d as textRatioAAAA largeAAAFix
Aaon white
4.39:1failpassfail
  • AA: use #567b8a as the text (4.57:1)
  • AAA: use #415d68 as the text (7.02:1)
  • AA: or shift the background to #0a0a0a (4.51:1)
Aaon black
4.78:1passpassfail
  • AAA: use #789cab as the text (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #587e8d 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 #587e8d
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 #587e8d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/587e8d-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