Color

#1d5bed

#1d5bed
hex#1d5bed
rgbrgb(29, 91, 237)
hslhsl(222, 85%, 52%)
oklchoklch(0.531 0.228 263.3)
Closest name: Blue Ribbon (#0066ff)Relative luminance 0.1386

Colors that go with #1d5bed

Charcoal, Crimson 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 →

#edae1d

#1dc3ed · #461ded

#ed1d5b · #5bed1d

Split-complementary

Open in tool →

#ed461d · #c3ed1d

#ed1dc3 · #edae1d · #1ded46

Contrast

#1d5bed as textRatioAAAA largeAAAFix
Aaon white
5.57:1passpassfail
  • AAA: use #114ad0 as the text (7.21:1)
Aaon black
3.77:1failpassfail
  • AA: use #346cef as the text (4.54:1)
  • AAA: use #6d95f3 as the text (7.24:1)
  • AA: or shift the background to #e8e8e8 (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1d5bed as the background.

Brands using this color

Fonts for this mood

#1d5bed reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1d5bed
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 #1d5bed and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1d5bed-9ca3c4-df6e4e-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