Color

#3d52c7

#3d52c7
hex#3d52c7
rgbrgb(61, 82, 199)
hslhsl(231, 55%, 51%)
oklchoklch(0.493 0.183 270.5)
Closest name: Denim (#1560bd)Relative luminance 0.1115

Colors that go with #3d52c7

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 →

#c7b23d

#3d97c7 · #6d3dc7

#c73d52 · #52c73d

Split-complementary

Open in tool →

#c76d3d · #97c73d

#c73d97 · #c7b23d · #3dc76d

Contrast

#3d52c7 as textRatioAAAA largeAAAFix
Aaon white
6.5:1passpassfail
  • AAA: use #374bbe as the text (7.21:1)
Aaon black
3.23:1failpassfail
  • AA: use #5d6ed0 as the text (4.61:1)
  • AAA: use #8492db as the text (7.12:1)
  • AA: or shift the background to #d9d9d9 (4.61:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3d52c7 as the background.

Brands using this color

Fonts for this mood

#3d52c7 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3d52c7
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 #3d52c7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3d52c7-9c9ec4-df834e-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