Color

#375cc3

#375cc3
hex#375cc3
rgbrgb(55, 92, 195)
hslhsl(224, 56%, 49%)
oklchoklch(0.507 0.167 265.8)
Closest name: Denim (#1560bd)Relative luminance 0.1241

Colors that go with #375cc3

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 →

#c39e37

#37a2c3 · #5837c3

#c3375c · #5cc337

Split-complementary

Open in tool →

#c35837 · #a2c337

#c337a2 · #c39e37 · #37c358

Contrast

#375cc3 as textRatioAAAA largeAAAFix
Aaon white
6.03:1passpassfail
  • AAA: use #3153af as the text (7.03:1)
Aaon black
3.48:1failpassfail
  • AA: use #5071ce as the text (4.59:1)
  • AAA: use #7c95da as the text (7.17:1)
  • AA: or shift the background to #e0e0e0 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #375cc3 as the background.

Brands using this color

Fonts for this mood

#375cc3 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #375cc3
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 #375cc3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/375cc3-9ca2c4-df724e-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