Color

#1d50dd

#1d50dd
hex#1d50dd
rgbrgb(29, 80, 221)
hslhsl(224, 77%, 49%)
oklchoklch(0.496 0.221 264.3)
Closest name: Denim (#1560bd)Relative luminance 0.1122

Colors that go with #1d50dd

Charcoal, Amber and 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 →

#ddaa1d

#1db0dd · #4a1ddd

#dd1d50 · #50dd1d

Split-complementary

Open in tool →

#dd4a1d · #b0dd1d

#dd1db0 · #ddaa1d · #1ddd4a

Contrast

#1d50dd as textRatioAAAA largeAAAFix
Aaon white
6.47:1passpassfail
  • AAA: use #1b4bd0 as the text (7.09:1)
Aaon black
3.24:1failpassfail
  • AA: use #416de6 as the text (4.55:1)
  • AAA: use #7394ed as the text (7.19:1)
  • AA: or shift the background to #d9d9d9 (4.59:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1d50dd as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#1d50dd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1d50dd
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 #1d50dd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1d50dd-9ca2c4-df724e-221f2d-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