Color

#3959db

#3959db
hex#3959db
rgbrgb(57, 89, 219)
hslhsl(228, 69%, 54%)
oklchoklch(0.521 0.202 268)
Closest name: Arcane Brew (#5260e1)Relative luminance 0.1313

Tints & shades

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

Harmonies

Complementary

Open in tool →

#dbba39

#39aadb · #6939db

#db3959 · #59db39

Split-complementary

Open in tool →

#db6939 · #aadb39

#db39aa · #dbba39 · #39db69

Contrast

#3959db as textRatioAAAA largeAAAFix
Aaon white
5.79:1passpassfail
  • AAA: use #2749d3 as the text (7.05:1)
Aaon black
3.63:1failpassfail
  • AA: use #536fdf as the text (4.71:1)
  • AAA: use #7e93e7 as the text (7.21:1)
  • AA: or shift the background to #e3e3e3 (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3959db 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

#3959db reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3959db
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 #3959db and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3959db-9c9fc4-df7c4e-231f2d-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