Color

#3312ca

#3312ca
hex#3312ca
rgbrgb(51, 18, 202)
hslhsl(251, 84%, 43%)
oklchoklch(0.407 0.246 274.3)
Closest name: Busty Blue (#3300cc)Relative luminance 0.054

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#a8ca12

#124cca · #8f12ca

#ca3312 · #12ca33

Split-complementary

Open in tool →

#ca8f12 · #4cca12

#ca124c · #a8ca12 · #12ca8f

Contrast

#3312ca as textRatioAAAA largeAAAFix
Aaon white
10.1:1passpasspassPasses AAA — no fix needed.
Aaon black
2.08:1failfailfail
  • AA: use #765bf1 as the text (4.54:1)
  • AAA: use #9985f4 as the text (7.02:1)
  • AA: or shift the background to #b0b0b0 (4.66:1)
  • AAA: or shift the background to #d9d9d9 (7.15:1)

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

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

mcpConnect your agent — build around #3312ca
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #3312ca and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3312ca-a89cc4-dfb34e-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