Color

#2161ba

#2161ba
hex#2161ba
rgbrgb(33, 97, 186)
hslhsl(215, 70%, 43%)
oklchoklch(0.503 0.155 257.8)
Closest name: Denim (#1560bd)Relative luminance 0.1242

Colors that go with #2161ba

Charcoal, Crimson and Sienna 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 →

#ba7a21

#21aeba · #2e21ba

#ba2161 · #61ba21

Split-complementary

Open in tool →

#ba2e21 · #aeba21

#ba21ae · #ba7a21 · #21ba2e

Contrast

#2161ba as textRatioAAAA largeAAAFix
Aaon white
6.03:1passpassfail
  • AAA: use #1d56a5 as the text (7.18:1)
Aaon black
3.48:1failpassfail
  • AA: use #2b73da as the text (4.57:1)
  • AAA: use #6398e3 as the text (7.13:1)
  • AA: or shift the background to #e0e0e0 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2161ba as the background.

Brands using this color

Fonts for this mood

#2161ba reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2161ba
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 #2161ba and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2161ba-9ca8c4-df5d4e-201f2d-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