Color

#321ad1

#321ad1
hex#321ad1
rgbrgb(50, 26, 209)
hslhsl(248, 78%, 46%)
oklchoklch(0.42 0.25 273.1)
Closest name: Busty Blue (#3300cc)Relative luminance 0.0602

Colors that go with #321ad1

Charcoal, Cornflower Blue and Crimson 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 →

#b8d11a

#1a5dd1 · #8e1ad1

#d1321a · #1ad132

Split-complementary

Open in tool →

#d18e1a · #5dd11a

#d11a5d · #b8d11a · #1ad18e

Contrast

#321ad1 as textRatioAAAA largeAAAFix
Aaon white
9.53:1passpasspassPasses AAA — no fix needed.
Aaon black
2.2:1failfailfail
  • AA: use #7360eb as the text (4.6:1)
  • AAA: use #9789f0 as the text (7.15:1)
  • AA: or shift the background to #b3b3b3 (4.54:1)
  • AAA: or shift the background to #dedede (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #321ad1 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

#321ad1 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #321ad1
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 #321ad1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/321ad1-a69cc4-dfac4e-271f2d-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