Color

#3d5ac2

#3d5ac2
hex#3d5ac2
rgbrgb(61, 90, 194)
hslhsl(227, 52%, 50%)
oklchoklch(0.505 0.166 268.2)
Closest name: Denim (#1560bd)Relative luminance 0.122

Colors that go with #3d5ac2

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 →

#c2a53d

#3d9cc2 · #633dc2

#c23d5a · #5ac23d

Split-complementary

Open in tool →

#c2633d · #9cc23d

#c23d9c · #c2a53d · #3dc263

Contrast

#3d5ac2 as textRatioAAAA largeAAAFix
Aaon white
6.1:1passpassfail
  • AAA: use #3751ae as the text (7.12:1)
Aaon black
3.44:1failpassfail
  • AA: use #5871ca as the text (4.63:1)
  • AAA: use #8395d8 as the text (7.26:1)
  • AA: or shift the background to #dedede (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3d5ac2 as the background.

Brands using this color

Fonts for this mood

#3d5ac2 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3d5ac2
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 #3d5ac2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3d5ac2-9ca0c4-df7a4e-221f2d-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