Color

#1945a3

#1945a3
hex#1945a3
rgbrgb(25, 69, 163)
hslhsl(221, 73%, 37%)
oklchoklch(0.422 0.16 262.7)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.0711

Colors that go with #1945a3

Charcoal, Steel Blue 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 →

#a37819

#198aa3 · #3319a3

#a31945 · #45a319

Split-complementary

Open in tool →

#a33319 · #8aa319

#a3198a · #a37819 · #19a333

Contrast

#1945a3 as textRatioAAAA largeAAAFix
Aaon white
8.67:1passpasspassPasses AAA — no fix needed.
Aaon black
2.42:1failfailfail
  • AA: use #3d71e1 as the text (4.65:1)
  • AAA: use #6d94e8 as the text (7.05:1)
  • AA: or shift the background to #bdbdbd (4.62:1)
  • AAA: or shift the background to #e8e8e8 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1945a3 as the background.

Brands using this color

Fonts for this mood

#1945a3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1945a3
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 #1945a3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1945a3-9ca4c4-df6b4e-211f2d-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