Color

#3963ac

#3963ac
hex#3963ac
rgbrgb(57, 99, 172)
hslhsl(218, 50%, 45%)
oklchoklch(0.507 0.126 260.7)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1277

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ac8239

#399dac · #4939ac

#ac3963 · #63ac39

Split-complementary

Open in tool →

#ac4939 · #9dac39

#ac399d · #ac8239 · #39ac49

Contrast

#3963ac as textRatioAAAA largeAAAFix
Aaon white
5.91:1passpassfail
  • AAA: use #335899 as the text (7.01:1)
Aaon black
3.55:1failpassfail
  • AA: use #4774c2 as the text (4.55:1)
  • AAA: use #7597d1 as the text (7.1:1)
  • AA: or shift the background to #e3e3e3 (4.6:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3963ac 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

#3963ac reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3963ac
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 #3963ac and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3963ac-9ca6c4-df644e-201f2d-e9f0f1?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