Color

#3e00db

#3e00db
hex#3e00db
rgbrgb(62, 0, 219)
hslhsl(257, 100%, 43%)
oklchoklch(0.428 0.266 276.6)
Closest name: Busty Blue (#3300cc)Relative luminance 0.0614

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9ddb00

#0030db · #ac00db

#db3e00 · #00db3e

Split-complementary

Open in tool →

#dbac00 · #30db00

#db0030 · #9ddb00 · #00dbac

Contrast

#3e00db as textRatioAAAA largeAAAFix
Aaon white
9.43:1passpasspassPasses AAA — no fix needed.
Aaon black
2.23:1failfailfail
  • AA: use #8352ff as the text (4.62:1)
  • AAA: use #a480ff as the text (7.11:1)
  • AA: or shift the background to #b5b5b5 (4.6:1)
  • AAA: or shift the background to #dedede (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3e00db 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

#3e00db reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3e00db
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 #3e00db and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3e00db-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