Color

#330aff

#330aff
hex#330aff
rgbrgb(51, 10, 255)
hslhsl(250, 100%, 52%)
oklchoklch(0.469 0.302 270.6)
Closest name: Overdue Blue (#4400ff)Relative luminance 0.0814

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d6ff0a

#0a5cff · #ad0aff

#ff330a · #0aff33

Split-complementary

Open in tool →

#ffad0a · #5cff0a

#ff0a5c · #d6ff0a · #0affad

Contrast

#330aff as textRatioAAAA largeAAAFix
Aaon white
7.99:1passpasspassPasses AAA — no fix needed.
Aaon black
2.63:1failfailfail
  • AA: use #7357ff as the text (4.54:1)
  • AAA: use #9985ff as the text (7.15:1)
  • AA: or shift the background to #c4c4c4 (4.58:1)
  • AAA: or shift the background to #f0f0f0 (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 #330aff as the background.

Brands using this color

Fonts for this mood

#330aff reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #330aff
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 #330aff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/330aff-a79cc4-dfb14e-281f2d-e9ecf1?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