Color

#424b6c

#424b6c
hex#424b6c
rgbrgb(66, 75, 108)
hslhsl(227, 24%, 34%)
oklchoklch(0.419 0.056 272.1)
Closest name: Bonne Nuit (#3a4866)Relative luminance 0.0727

Colors that go with #424b6c

Steel Blue, Blue and Cadet 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 →

#6c6242

#42606c · #4e426c

#6c424b · #4b6c42

Split-complementary

Open in tool →

#6c4e42 · #606c42

#6c4260 · #6c6242 · #426c4e

Contrast

#424b6c as textRatioAAAA largeAAAFix
Aaon white
8.56:1passpasspassPasses AAA — no fix needed.
Aaon black
2.45:1failfailfail
  • AA: use #6774a2 as the text (4.6:1)
  • AAA: use #8a94b7 as the text (7:1)
  • AA: or shift the background to #bdbdbd (4.55:1)
  • AAA: or shift the background to #ebebeb (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #424b6c 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 #424b6c
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 #424b6c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/424b6c-9ca0c4-df7a4e-221f2d-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