Color

#1d50bf

#1d50bf
hex#1d50bf
rgbrgb(29, 80, 191)
hslhsl(221, 74%, 43%)
oklchoklch(0.47 0.183 262.8)
Closest name: Denim (#1560bd)Relative luminance 0.0976

Colors that go with #1d50bf

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 →

#bf8b1d

#1da1bf · #3a1dbf

#bf1d50 · #50bf1d

Split-complementary

Open in tool →

#bf3a1d · #a1bf1d

#bf1da1 · #bf8b1d · #1dbf3a

Contrast

#1d50bf as textRatioAAAA largeAAAFix
Aaon white
7.11:1passpasspassPasses AAA — no fix needed.
Aaon black
2.95:1failfailfail
  • AA: use #3c70e2 as the text (4.61:1)
  • AAA: use #6d94e9 as the text (7.06:1)
  • AA: or shift the background to #cfcfcf (4.57:1)
  • AAA: or shift the background to #ffffff (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1d50bf as the background.

Brands using this color

Fonts for this mood

#1d50bf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1d50bf
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 #1d50bf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1d50bf-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