Color

#375ba0

#375ba0
hex#375ba0
rgbrgb(55, 91, 160)
hslhsl(219, 49%, 42%)
oklchoklch(0.48 0.119 262.1)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1083

Colors that go with #375ba0

Charcoal, Sea Green and Sienna 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 →

#a07b37

#3790a0 · #4637a0

#a0375b · #5ba037

Split-complementary

Open in tool →

#a04637 · #90a037

#a03790 · #a07b37 · #37a046

Contrast

#375ba0 as textRatioAAAA largeAAAFix
Aaon white
6.63:1passpassfail
  • AAA: use #345798 as the text (7.09:1)
Aaon black
3.17:1failpassfail
  • AA: use #4973c1 as the text (4.51:1)
  • AAA: use #7696d0 as the text (7.04:1)
  • AA: or shift the background to #d6d6d6 (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 #375ba0 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

#375ba0 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #375ba0
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 #375ba0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/375ba0-9ca5c4-df664e-211f2d-e9f0f1?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