Color

#4200db

#4200db
hex#4200db
rgbrgb(66, 0, 219)
hslhsl(258, 100%, 43%)
oklchoklch(0.431 0.265 277.9)
Closest name: Busty Blue (#3300cc)Relative luminance 0.0627

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9adb00

#002cdb · #af00db

#db4200 · #00db42

Split-complementary

Open in tool →

#dbaf00 · #2cdb00

#db002c · #9adb00 · #00dbaf

Contrast

#4200db as textRatioAAAA largeAAAFix
Aaon white
9.31:1passpasspassPasses AAA — no fix needed.
Aaon black
2.25:1failfailfail
  • AA: use #8652ff as the text (4.66:1)
  • AAA: use #a680ff as the text (7.15:1)
  • AA: or shift the background to #b5b5b5 (4.54:1)
  • AAA: or shift the background to #e0e0e0 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4200db 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

#4200db reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4200db
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 #4200db and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4200db-ad9cc4-dfc44e-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