Color

#375fe1

#375fe1
hex#375fe1
rgbrgb(55, 95, 225)
hslhsl(226, 74%, 55%)
oklchoklch(0.536 0.203 266.4)
Closest name: Bluetiful (#3c69e7)Relative luminance 0.1443

Colors that go with #375fe1

Blue, Crimson and Deep Sky Blue 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 →

#e1ba37

#37b4e1 · #6537e1

#e1375f · #5fe137

Split-complementary

Open in tool →

#e16537 · #b4e137

#e137b4 · #e1ba37 · #37e165

Contrast

#375fe1 as textRatioAAAA largeAAAFix
Aaon white
5.4:1passpassfail
  • AAA: use #1f49d1 as the text (7.16:1)
Aaon black
3.89:1failpassfail
  • AA: use #496de4 as the text (4.59:1)
  • AAA: use #7a94eb as the text (7.26:1)
  • AA: or shift the background to #ebebeb (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #375fe1 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

#375fe1 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #375fe1
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 #375fe1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/375fe1-9ca1c4-df774e-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