Color

#1931cc

#1931cc
hex#1931cc
rgbrgb(25, 49, 204)
hslhsl(232, 78%, 45%)
oklchoklch(0.428 0.234 266.5)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0676

Colors that go with #1931cc

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 →

#ccb419

#198bcc · #5b19cc

#cc1931 · #31cc19

Split-complementary

Open in tool →

#cc5b19 · #8bcc19

#cc198b · #ccb419 · #19cc5b

Contrast

#1931cc as textRatioAAAA largeAAAFix
Aaon white
8.93:1passpasspassPasses AAA — no fix needed.
Aaon black
2.35:1failfailfail
  • AA: use #576bea as the text (4.7:1)
  • AAA: use #808fef as the text (7.09:1)
  • AA: or shift the background to #bababa (4.6:1)
  • AAA: or shift the background to #e6e6e6 (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1931cc as the background.

Brands using this color

Fonts for this mood

#1931cc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1931cc
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 #1931cc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1931cc-9c9dc4-df864e-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