Color

#3756c8

#3756c8
hex#3756c8
rgbrgb(55, 86, 200)
hslhsl(227, 57%, 50%)
oklchoklch(0.499 0.181 267.7)
Closest name: Denim (#1560bd)Relative luminance 0.1164

Colors that go with #3756c8

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 →

#c8a937

#379fc8 · #6037c8

#c83756 · #56c837

Split-complementary

Open in tool →

#c86037 · #9fc837

#c8379f · #c8a937 · #37c860

Contrast

#3756c8 as textRatioAAAA largeAAAFix
Aaon white
6.31:1passpassfail
  • AAA: use #324fb8 as the text (7.13:1)
Aaon black
3.33:1failpassfail
  • AA: use #536ed0 as the text (4.51:1)
  • AAA: use #7f93dc as the text (7.11:1)
  • AA: or shift the background to #dbdbdb (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3756c8 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

#3756c8 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3756c8
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 #3756c8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3756c8-9ca0c4-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