Color

#4c478a

#4c478a
hex#4c478a
rgbrgb(76, 71, 138)
hslhsl(244, 32%, 41%)
oklchoklch(0.437 0.108 284.4)
Closest name: darkslateblue (#483d8b)Relative luminance 0.0788

Colors that go with #4c478a

Charcoal, Sea Green and Steel 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 →

#868a47

#47648a · #6d478a

#8a4c47 · #478a4c

Split-complementary

Open in tool →

#8a6d47 · #648a47

#8a4764 · #868a47 · #478a6d

Contrast

#4c478a as textRatioAAAA largeAAAFix
Aaon white
8.15:1passpasspassPasses AAA — no fix needed.
Aaon black
2.58:1failfailfail
  • AA: use #736eb4 as the text (4.62:1)
  • AAA: use #9490c6 as the text (7.06:1)
  • AA: or shift the background to #c2c2c2 (4.58:1)
  • AAA: or shift the background to #f0f0f0 (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4c478a 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 #4c478a
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 #4c478a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4c478a-a39cc4-dfa24e-261f2d-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