Color

#1937cc

#1937cc
hex#1937cc
rgbrgb(25, 55, 204)
hslhsl(230, 78%, 45%)
oklchoklch(0.437 0.228 266.1)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.073

Colors that go with #1937cc

Charcoal, Sea Green and Steel 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 →

#ccae19

#1991cc · #5519cc

#cc1937 · #37cc19

Split-complementary

Open in tool →

#cc5519 · #91cc19

#cc1991 · #ccae19 · #19cc55

Contrast

#1937cc as textRatioAAAA largeAAAFix
Aaon white
8.54:1passpasspassPasses AAA — no fix needed.
Aaon black
2.46:1failfailfail
  • AA: use #536cea as the text (4.7:1)
  • AAA: use #7b8fef as the text (7.02:1)
  • AA: or shift the background to #bdbdbd (4.54:1)
  • AAA: or shift the background to #ebebeb (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1937cc as the background.

Brands using this color

Fonts for this mood

#1937cc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1937cc
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 #1937cc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1937cc-9c9ec4-df814e-231f2d-e9eef1?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