Color

#3312ab

#3312ab
hex#3312ab
rgbrgb(51, 18, 171)
hslhsl(253, 81%, 37%)
oklchoklch(0.37 0.213 277.9)
Closest name: Galactic Highway (#3311bb)Relative luminance 0.0408

Colors that go with #3312ab

Blue, Charcoal 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 →

#8aab12

#123dab · #7f12ab

#ab3312 · #12ab33

Split-complementary

Open in tool →

#ab7f12 · #3dab12

#ab123d · #8aab12 · #12ab7f

Contrast

#3312ab as textRatioAAAA largeAAAFix
Aaon white
11.57:1passpasspassPasses AAA — no fix needed.
Aaon black
1.82:1failfailfail
  • AA: use #7d5dee as the text (4.67:1)
  • AAA: use #9e87f2 as the text (7.2:1)
  • AA: or shift the background to #a3a3a3 (4.59:1)
  • AAA: or shift the background to #cccccc (7.2:1)

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

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

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

tool url/palettes/new/3312ab-a99cc4-dfb84e-281f2d-e9ebf1?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