Color

#3312f3

#3312f3
hex#3312f3
rgbrgb(51, 18, 243)
hslhsl(249, 90%, 51%)
oklchoklch(0.458 0.288 271.2)
Closest name: Bluebonnet (#1c1cf0)Relative luminance 0.0761

Colors that go with #3312f3

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 →

#d1f312

#1260f3 · #a412f3

#f33312 · #12f333

Split-complementary

Open in tool →

#f3a412 · #60f312

#f31260 · #d1f312 · #12f3a4

Contrast

#3312f3 as textRatioAAAA largeAAAFix
Aaon white
8.33:1passpasspassPasses AAA — no fix needed.
Aaon black
2.52:1failfailfail
  • AA: use #725af6 as the text (4.51:1)
  • AAA: use #9786f9 as the text (7.09:1)
  • AA: or shift the background to #bfbfbf (4.53:1)
  • AAA: or shift the background to #ededed (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3312f3 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

#3312f3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3312f3
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 #3312f3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3312f3-a79cc4-dfae4e-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