Color

#3f4ade

#3f4ade
hex#3f4ade
rgbrgb(63, 74, 222)
hslhsl(236, 71%, 56%)
oklchoklch(0.5 0.221 272.1)
Closest name: Blurple (#5539cc)Relative luminance 0.1123

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ded43f

#3f99de · #843fde

#de3f4a · #4ade3f

Split-complementary

Open in tool →

#de843f · #99de3f

#de3f99 · #ded43f · #3fde84

Contrast

#3f4ade as textRatioAAAA largeAAAFix
Aaon white
6.47:1passpassfail
  • AAA: use #3642dd as the text (7.05:1)
Aaon black
3.25:1failpassfail
  • AA: use #5e67e4 as the text (4.54:1)
  • AAA: use #8990eb as the text (7.25:1)
  • AA: or shift the background to #d9d9d9 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3f4ade 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

#3f4ade reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3f4ade
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 #3f4ade and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3f4ade-9e9cc4-df8f4e-241f2d-e9eef1?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