Color

#504cb8

#504cb8
hex#504cb8
rgbrgb(80, 76, 184)
hslhsl(242, 43%, 51%)
oklchoklch(0.483 0.165 279.9)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1034

Colors that go with #504cb8

Charcoal, Sea Green and Amber 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 →

#b4b84c

#4c7eb8 · #864cb8

#b8504c · #4cb850

Split-complementary

Open in tool →

#b8864c · #7eb84c

#b84c7e · #b4b84c · #4cb886

Contrast

#504cb8 as textRatioAAAA largeAAAFix
Aaon white
6.85:1passpassfail
  • AAA: use #4c49b6 as the text (7.15:1)
Aaon black
3.07:1failpassfail
  • AA: use #706dc5 as the text (4.68:1)
  • AAA: use #9492d3 as the text (7.31:1)
  • AA: or shift the background to #d4d4d4 (4.62:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #504cb8 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

#504cb8 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #504cb8
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 #504cb8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/504cb8-a29cc4-df9e4e-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