Color

#3928d7

#3928d7
hex#3928d7
rgbrgb(57, 40, 215)
hslhsl(246, 69%, 50%)
oklchoklch(0.444 0.246 274.1)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0729

Colors that go with #3928d7

Charcoal, Sea Green and Cornflower 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 →

#c6d728

#286ed7 · #9128d7

#d73928 · #28d739

Split-complementary

Open in tool →

#d79128 · #6ed728

#d7286e · #c6d728 · #28d791

Contrast

#3928d7 as textRatioAAAA largeAAAFix
Aaon white
8.54:1passpasspassPasses AAA — no fix needed.
Aaon black
2.46:1failfailfail
  • AA: use #7164e3 as the text (4.63:1)
  • AAA: use #948bea as the text (7.14:1)
  • AA: or shift the background to #bdbdbd (4.55:1)
  • AAA: or shift the background to #ebebeb (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3928d7 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

#3928d7 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3928d7
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 #3928d7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3928d7-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