Color

#3d1aea

#3d1aea
hex#3d1aea
rgbrgb(61, 26, 234)
hslhsl(250, 83%, 51%)
oklchoklch(0.457 0.273 274.3)
Closest name: Overdue Blue (#4400ff)Relative luminance 0.0767

Colors that go with #3d1aea

Charcoal, Cobalt Blue 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 →

#c7ea1a

#1a5fea · #a51aea

#ea3d1a · #1aea3d

Split-complementary

Open in tool →

#eaa51a · #5fea1a

#ea1a5f · #c7ea1a · #1aeaa5

Contrast

#3d1aea as textRatioAAAA largeAAAFix
Aaon white
8.29:1passpasspassPasses AAA — no fix needed.
Aaon black
2.53:1failfailfail
  • AA: use #745cf0 as the text (4.53:1)
  • AAA: use #9886f4 as the text (7.05:1)
  • AA: or shift the background to #bfbfbf (4.51:1)
  • AAA: or shift the background to #ededed (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 #3d1aea 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

#3d1aea reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3d1aea
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 #3d1aea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3d1aea-a79cc4-dfb14e-281f2d-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