Color

#3967db

#3967db
hex#3967db
rgbrgb(57, 103, 219)
hslhsl(223, 69%, 54%)
oklchoklch(0.548 0.185 264.7)
Closest name: royalblue (#4169e1)Relative luminance 0.1568

Tints & shades

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

Harmonies

Complementary

Open in tool →

#dbad39

#39b8db · #5c39db

#db3967 · #67db39

Split-complementary

Open in tool →

#db5c39 · #b8db39

#db39b8 · #dbad39 · #39db5c

Contrast

#3967db as textRatioAAAA largeAAAFix
Aaon white
5.08:1passpassfail
  • AAA: use #234fbe as the text (7.16:1)
Aaon black
4.14:1failpassfail
  • AA: use #4671dd as the text (4.67:1)
  • AAA: use #7595e6 as the text (7.2:1)
  • AA: or shift the background to #f2f2f2 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3967db 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

#3967db reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3967db
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 #3967db and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3967db-9ca3c4-df704e-211f2d-e9eff1?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