Color

#420afa

#420afa
hex#420afa
rgbrgb(66, 10, 250)
hslhsl(254, 96%, 51%)
oklchoklch(0.472 0.293 274.7)
Closest name: Overdue Blue (#4400ff)Relative luminance 0.0828

Tints & shades

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

Harmonies

Complementary

Open in tool →

#c2fa0a

#0a4afa · #ba0afa

#fa420a · #0afa42

Split-complementary

Open in tool →

#faba0a · #4afa0a

#fa0a4a · #c2fa0a · #0afaba

Contrast

#420afa as textRatioAAAA largeAAAFix
Aaon white
7.91:1passpasspassPasses AAA — no fix needed.
Aaon black
2.66:1failfailfail
  • AA: use #7c55fc as the text (4.56:1)
  • AAA: use #9f82fc as the text (7.07:1)
  • AA: or shift the background to #c4c4c4 (4.53:1)
  • AAA: or shift the background to #f2f2f2 (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 #420afa 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

#420afa reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #420afa
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 #420afa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/420afa-aa9cc4-dfbb4e-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