Color

#375ff1

#375ff1
hex#375ff1
rgbrgb(55, 95, 241)
hslhsl(227, 87%, 58%)
oklchoklch(0.55 0.223 266.8)
Closest name: Bluerocratic (#1f66ff)Relative luminance 0.1535

Colors that go with #375ff1

Charcoal, Crimson 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 →

#f1c937

#37bcf1 · #6c37f1

#f1375f · #5ff137

Split-complementary

Open in tool →

#f16c37 · #bcf137

#f137bc · #f1c937 · #37f16c

Contrast

#375ff1 as textRatioAAAA largeAAAFix
Aaon white
5.16:1passpassfail
  • AAA: use #103fea as the text (7.19:1)
Aaon black
4.07:1failpassfail
  • AA: use #456bf2 as the text (4.64:1)
  • AAA: use #7591f5 as the text (7.13:1)
  • AA: or shift the background to #f0f0f0 (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 #375ff1 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#375ff1 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #375ff1
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 #375ff1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/375ff1-9ca0c4-df7a4e-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