Color

#331ebe

#331ebe
hex#331ebe
rgbrgb(51, 30, 190)
hslhsl(248, 73%, 43%)
oklchoklch(0.402 0.227 275)
Closest name: Galactic Highway (#3311bb)Relative luminance 0.0535

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a8be1e

#1e58be · #831ebe

#be331e · #1ebe33

Split-complementary

Open in tool →

#be831e · #58be1e

#be1e58 · #a8be1e · #1ebe83

Contrast

#331ebe as textRatioAAAA largeAAAFix
Aaon white
10.14:1passpasspassPasses AAA — no fix needed.
Aaon black
2.07:1failfailfail
  • AA: use #7260e6 as the text (4.53:1)
  • AAA: use #9588ec as the text (7.01:1)
  • AA: or shift the background to #adadad (4.52:1)
  • AAA: or shift the background to #d9d9d9 (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #331ebe 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

#331ebe reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #331ebe
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 #331ebe and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/331ebe-a69cc4-dfac4e-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