Color

#5a616d

#5a616d
hex#5a616d
rgbrgb(90, 97, 109)
hslhsl(218, 10%, 39%)
oklchoklch(0.491 0.021 261.3)
Closest name: Concrete Landscape (#5c606e)Relative luminance 0.1183

Colors that go with #5a616d

Charcoal, Blush Pink 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#6d665a

#5a6b6d · #5c5a6d

#6d5a61 · #616d5a

Split-complementary

Open in tool →

#6d5c5a · #6b6d5a

#6d5a6b · #6d665a · #5a6d5c

Contrast

#5a616d as textRatioAAAA largeAAAFix
Aaon white
6.24:1passpassfail
  • AAA: use #535965 as the text (7.04:1)
Aaon black
3.37:1failpassfail
  • AA: use #6c7584 as the text (4.52:1)
  • AAA: use #8f96a3 as the text (7.06:1)
  • AA: or shift the background to #dbdbdb (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5a616d as the background.

Brands using this color

mcpConnect your agent — build around #5a616d
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 #5a616d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5a616d-9ca6c4-df644e-201f2d-e9f0f1?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