Color

#503c86

#503c86
hex#503c86
rgbrgb(80, 60, 134)
hslhsl(256, 38%, 38%)
oklchoklch(0.417 0.119 293)
Closest name: darkslateblue (#483d8b)Relative luminance 0.0666

Colors that go with #503c86

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 →

#72863c

#3c4d86 · #753c86

#86503c · #3c8650

Split-complementary

Open in tool →

#86753c · #4d863c

#863c4d · #72863c · #3c8675

Contrast

#503c86 as textRatioAAAA largeAAAFix
Aaon white
9.01:1passpasspassPasses AAA — no fix needed.
Aaon black
2.33:1failfailfail
  • AA: use #7e68bb as the text (4.58:1)
  • AAA: use #9f8ecc as the text (7.22:1)
  • AA: or shift the background to #b8b8b8 (4.54:1)
  • AAA: or shift the background to #e3e3e3 (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #503c86 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

#503c86 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #503c86
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 #503c86 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/503c86-ab9cc4-dfbf4e-291f2d-e9ebf1?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