Color

#3d04cd

#3d04cd
hex#3d04cd
rgbrgb(61, 4, 205)
hslhsl(257, 96%, 41%)
oklchoklch(0.412 0.251 277.8)
Closest name: Busty Blue (#3300cc)Relative luminance 0.0549

Tints & shades

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

Harmonies

Complementary

Open in tool →

#94cd04

#0430cd · #a104cd

#cd3d04 · #04cd3d

Split-complementary

Open in tool →

#cda104 · #30cd04

#cd0430 · #94cd04 · #04cda1

Contrast

#3d04cd as textRatioAAAA largeAAAFix
Aaon white
10.01:1passpasspassPasses AAA — no fix needed.
Aaon black
2.1:1failfailfail
  • AA: use #8455fc as the text (4.69:1)
  • AAA: use #a582fc as the text (7.2:1)
  • AA: or shift the background to #b0b0b0 (4.62:1)
  • AAA: or shift the background to #d9d9d9 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3d04cd 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

#3d04cd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3d04cd
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 #3d04cd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3d04cd-ac9cc4-dfc24e-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