Color

#3929c7

#3929c7
hex#3929c7
rgbrgb(57, 41, 199)
hslhsl(246, 66%, 47%)
oklchoklch(0.428 0.227 275.4)
Closest name: Busty Blue (#3300cc)Relative luminance 0.0658

Colors that go with #3929c7

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 →

#b7c729

#2968c7 · #8829c7

#c73929 · #29c739

Split-complementary

Open in tool →

#c78829 · #68c729

#c72968 · #b7c729 · #29c788

Contrast

#3929c7 as textRatioAAAA largeAAAFix
Aaon white
9.07:1passpasspassPasses AAA — no fix needed.
Aaon black
2.32:1failfailfail
  • AA: use #7367e0 as the text (4.75:1)
  • AAA: use #968de8 as the text (7.27:1)
  • AA: or shift the background to #b8b8b8 (4.57:1)
  • AAA: or shift the background to #e3e3e3 (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3929c7 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

#3929c7 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3929c7
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 #3929c7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3929c7-a59cc4-dfa74e-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