Color

#3f1ee6

#3f1ee6
hex#3f1ee6
rgbrgb(63, 30, 230)
hslhsl(250, 80%, 51%)
oklchoklch(0.456 0.267 275.1)
Closest name: Overdue Blue (#4400ff)Relative luminance 0.077

Colors that go with #3f1ee6

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 →

#c5e61e

#1e61e6 · #a31ee6

#e63f1e · #1ee63f

Split-complementary

Open in tool →

#e6a31e · #61e61e

#e61e61 · #c5e61e · #1ee6a3

Contrast

#3f1ee6 as textRatioAAAA largeAAAFix
Aaon white
8.27:1passpasspassPasses AAA — no fix needed.
Aaon black
2.54:1failfailfail
  • AA: use #765eed as the text (4.59:1)
  • AAA: use #9988f2 as the text (7.16:1)
  • AA: or shift the background to #c2c2c2 (4.64:1)
  • AAA: or shift the background to #ededed (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3f1ee6 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

#3f1ee6 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3f1ee6
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 #3f1ee6 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3f1ee6-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