Color

#3a04cd

#3a04cd
hex#3a04cd
rgbrgb(58, 4, 205)
hslhsl(256, 96%, 41%)
oklchoklch(0.41 0.252 276.7)
Closest name: Busty Blue (#3300cc)Relative luminance 0.0539

Tints & shades

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

Harmonies

Complementary

Open in tool →

#97cd04

#0433cd · #9e04cd

#cd3a04 · #04cd3a

Split-complementary

Open in tool →

#cd9e04 · #33cd04

#cd0433 · #97cd04 · #04cd9e

Contrast

#3a04cd as textRatioAAAA largeAAAFix
Aaon white
10.1:1passpasspassPasses AAA — no fix needed.
Aaon black
2.08:1failfailfail
  • AA: use #8155fc as the text (4.64:1)
  • AAA: use #a382fc as the text (7.16:1)
  • AA: or shift the background to #adadad (4.5:1)
  • AAA: or shift the background to #d9d9d9 (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3a04cd 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

#3a04cd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3a04cd
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 #3a04cd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3a04cd-ab9cc4-dfbf4e-291f2d-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