Color

#3a52cb

#3a52cb
hex#3a52cb
rgbrgb(58, 82, 203)
hslhsl(230, 58%, 51%)
oklchoklch(0.495 0.189 269.6)
Closest name: Denim (#1560bd)Relative luminance 0.1125

Colors that go with #3a52cb

Charcoal, Sea Green and Amber 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 →

#cbb23a

#3a9acb · #6a3acb

#cb3a52 · #52cb3a

Split-complementary

Open in tool →

#cb6a3a · #9acb3a

#cb3a9a · #cbb23a · #3acb6a

Contrast

#3a52cb as textRatioAAAA largeAAAFix
Aaon white
6.46:1passpassfail
  • AAA: use #334bc1 as the text (7.2:1)
Aaon black
3.25:1failpassfail
  • AA: use #5a6ed3 as the text (4.61:1)
  • AAA: use #8291de as the text (7.05:1)
  • 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 #3a52cb as the background.

Brands using this color

Fonts for this mood

#3a52cb reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3a52cb
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 #3a52cb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3a52cb-9c9ec4-df814e-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