Color

#3924db

#3924db
hex#3924db
rgbrgb(57, 36, 219)
hslhsl(247, 72%, 50%)
oklchoklch(0.445 0.253 274)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0725

Colors that go with #3924db

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 →

#c6db24

#246adb · #9524db

#db3924 · #24db39

Split-complementary

Open in tool →

#db9524 · #6adb24

#db246a · #c6db24 · #24db95

Contrast

#3924db as textRatioAAAA largeAAAFix
Aaon white
8.57:1passpasspassPasses AAA — no fix needed.
Aaon black
2.45:1failfailfail
  • AA: use #7161e5 as the text (4.54:1)
  • AAA: use #9489ec as the text (7.05:1)
  • AA: or shift the background to #bdbdbd (4.56:1)
  • AAA: or shift the background to #ebebeb (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3924db 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

#3924db reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3924db
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 #3924db and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3924db-a59cc4-dfaa4e-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