Color

#47378b

#47378b
hex#47378b
rgbrgb(71, 55, 139)
hslhsl(251, 43%, 38%)
oklchoklch(0.402 0.134 287.6)
Closest name: darkslateblue (#483d8b)Relative luminance 0.0594

Colors that go with #47378b

Charcoal, Steel Blue 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7b8b37

#37528b · #70378b

#8b4737 · #378b47

Split-complementary

Open in tool →

#8b7037 · #528b37

#8b3752 · #7b8b37 · #378b70

Contrast

#47378b as textRatioAAAA largeAAAFix
Aaon white
9.6:1passpasspassPasses AAA — no fix needed.
Aaon black
2.19:1failfailfail
  • AA: use #7a69c3 as the text (4.64:1)
  • AAA: use #9a8ed2 as the text (7.17:1)
  • AA: or shift the background to #b3b3b3 (4.58:1)
  • AAA: or shift the background to #dedede (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #47378b as the background.

Brands using this color

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

Fonts for this mood

#47378b reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #47378b
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 #47378b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/47378b-a89cc4-dfb34e-281f2d-e9ecf1?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