Color

#556a9b

#556a9b
hex#556a9b
rgbrgb(85, 106, 155)
hslhsl(222, 29%, 47%)
oklchoklch(0.529 0.082 265.9)
Closest name: Bellflower (#5d66aa)Relative luminance 0.1461

Colors that go with #556a9b

Charcoal, Sea Green and Dark Olive Green 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 →

#9b8655

#558d9b · #63559b

#9b556a · #6a9b55

Split-complementary

Open in tool →

#9b6355 · #8d9b55

#9b558d · #9b8655 · #559b63

Contrast

#556a9b as textRatioAAAA largeAAAFix
Aaon white
5.36:1passpassfail
  • AAA: use #475880 as the text (7.06:1)
Aaon black
3.92:1failpassfail
  • AA: use #5e74a6 as the text (4.52:1)
  • AAA: use #8596bc as the text (7.09:1)
  • AA: or shift the background to #ededed (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #556a9b as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

mcpConnect your agent — build around #556a9b
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 #556a9b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/556a9b-9ca3c4-df6e4e-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