Color

#375beb

#375beb
hex#375beb
rgbrgb(55, 91, 235)
hslhsl(228, 82%, 57%)
oklchoklch(0.537 0.22 267.4)
Closest name: Bluetiful (#3c69e7)Relative luminance 0.1429

Colors that go with #375beb

Charcoal, Crimson and Sea Green 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 →

#ebc737

#37b5eb · #6d37eb

#eb375b · #5beb37

Split-complementary

Open in tool →

#eb6d37 · #b5eb37

#eb37b5 · #ebc737 · #37eb6d

Contrast

#375beb as textRatioAAAA largeAAAFix
Aaon white
5.44:1passpassfail
  • AAA: use #1741e8 as the text (7.1:1)
Aaon black
3.86:1failpassfail
  • AA: use #4a6bed as the text (4.62:1)
  • AAA: use #7891f2 as the text (7.13:1)
  • AA: or shift the background to #ebebeb (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 #375beb as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#375beb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

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

tool url/palettes/new/375beb-9c9fc4-df7c4e-231f2d-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