Color

#1645a2

#1645a2
hex#1645a2
rgbrgb(22, 69, 162)
hslhsl(220, 76%, 36%)
oklchoklch(0.42 0.159 262)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.0704

Colors that go with #1645a2

Charcoal, Crimson 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 →

#a27316

#168aa2 · #2d16a2

#a21645 · #45a216

Split-complementary

Open in tool →

#a22d16 · #8aa216

#a2168a · #a27316 · #16a22d

Contrast

#1645a2 as textRatioAAAA largeAAAFix
Aaon white
8.72:1passpasspassPasses AAA — no fix needed.
Aaon black
2.41:1failfailfail
  • AA: use #356fe3 as the text (4.53:1)
  • AAA: use #6b96eb as the text (7.19:1)
  • AA: or shift the background to #bdbdbd (4.64:1)
  • AAA: or shift the background to #e8e8e8 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1645a2 as the background.

Brands using this color

Fonts for this mood

#1645a2 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1645a2
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 #1645a2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1645a2-9ca5c4-df694e-211f2d-e9f0f1?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