Color

#55577c

#55577c
hex#55577c
rgbrgb(85, 87, 124)
hslhsl(237, 19%, 41%)
oklchoklch(0.47 0.06 281.4)
Closest name: Deep Indigo (#4c567a)Relative luminance 0.102

Colors that go with #55577c

Steel Blue, Teal 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.

Real palettes that use #55577c

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7c7a55

#556b7c · #67557c

#7c5557 · #577c55

Split-complementary

Open in tool →

#7c6755 · #6b7c55

#7c556b · #7c7a55 · #557c67

Contrast

#55577c as textRatioAAAA largeAAAFix
Aaon white
6.91:1passpassfail
  • AAA: use #535579 as the text (7.13:1)
Aaon black
3.04:1failpassfail
  • AA: use #70739e as the text (4.63:1)
  • AAA: use #9294b5 as the text (7.13:1)
  • AA: or shift the background to #d1d1d1 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #55577c 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 #55577c
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 #55577c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/55577c-9f9cc4-df924e-251f2d-e9edf1?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