Color

#375aa0

#375aa0
hex#375aa0
rgbrgb(55, 90, 160)
hslhsl(220, 49%, 42%)
oklchoklch(0.478 0.12 262.7)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1066

Colors that go with #375aa0

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 →

#a07d37

#378ea0 · #4837a0

#a0375a · #5aa037

Split-complementary

Open in tool →

#a04837 · #8ea037

#a0378e · #a07d37 · #37a048

Contrast

#375aa0 as textRatioAAAA largeAAAFix
Aaon white
6.7:1passpassfail
  • AAA: use #35579c as the text (7.01:1)
Aaon black
3.13:1failpassfail
  • AA: use #4c74c2 as the text (4.58:1)
  • AAA: use #7a97d1 as the text (7.17:1)
  • AA: or shift the background to #d4d4d4 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #375aa0 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

#375aa0 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #375aa0
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 #375aa0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/375aa0-9ca5c4-df694e-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