Color

#5b406d

#5b406d
hex#5b406d
rgbrgb(91, 64, 109)
hslhsl(276, 26%, 34%)
oklchoklch(0.421 0.079 310.9)
Closest name: Haunted Candelabra (#57446a)Relative luminance 0.07

Colors that go with #5b406d

Crimson, Denim and Goldenrod 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 →

#526d40

#45406d · #6d4069

#6d5b40 · #406d5b

Split-complementary

Open in tool →

#696d40 · #406d45

#6d4540 · #526d40 · #40696d

Contrast

#5b406d as textRatioAAAA largeAAAFix
Aaon white
8.75:1passpasspassPasses AAA — no fix needed.
Aaon black
2.4:1failfailfail
  • AA: use #8d68a6 as the text (4.66:1)
  • AAA: use #a88bbb as the text (7.08:1)
  • AA: or shift the background to #bababa (4.51:1)
  • AAA: or shift the background to #e6e6e6 (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5b406d 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 #5b406d
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 #5b406d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5b406d-b99cc4-bfcb62-2d1f2d-eae9f1?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