Color

#545e73

#545e73
hex#545e73
rgbrgb(84, 94, 115)
hslhsl(221, 16%, 39%)
oklchoklch(0.481 0.036 265)
Closest name: Concrete Landscape (#5c606e)Relative luminance 0.1113

Colors that go with #545e73

Charcoal, 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 →

#736954

#546e73 · #595473

#73545e · #5e7354

Split-complementary

Open in tool →

#735954 · #6e7354

#73546e · #736954 · #547359

Contrast

#545e73 as textRatioAAAA largeAAAFix
Aaon white
6.51:1passpassfail
  • AAA: use #4f596d as the text (7.04:1)
Aaon black
3.23:1failpassfail
  • AA: use #697691 as the text (4.6:1)
  • AAA: use #8c96ab as the text (7.07:1)
  • AA: or shift the background to #d9d9d9 (4.61:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #545e73 as the background.

Brands using this color

mcpConnect your agent — build around #545e73
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 #545e73 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/545e73-9ca4c4-df6b4e-211f2d-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