Color

#3b4dc4

#3b4dc4
hex#3b4dc4
rgbrgb(59, 77, 196)
hslhsl(232, 54%, 50%)
oklchoklch(0.48 0.185 271)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1022

Colors that go with #3b4dc4

Charcoal, Sea Green and Steel Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#c4b23b

#3b92c4 · #6d3bc4

#c43b4d · #4dc43b

Split-complementary

Open in tool →

#c46d3b · #92c43b

#c43b92 · #c4b23b · #3bc46d

Contrast

#3b4dc4 as textRatioAAAA largeAAAFix
Aaon white
6.9:1passpassfail
  • AAA: use #394bc0 as the text (7.14:1)
Aaon black
3.04:1failpassfail
  • AA: use #5e6dcf as the text (4.56:1)
  • AAA: use #8591db as the text (7.07:1)
  • AA: or shift the background to #d1d1d1 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3b4dc4 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

#3b4dc4 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3b4dc4
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #3b4dc4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3b4dc4-9c9dc4-df864e-231f2d-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