Color

#1d5fe2

#1d5fe2
hex#1d5fe2
rgbrgb(29, 95, 226)
hslhsl(220, 77%, 50%)
oklchoklch(0.529 0.21 262.1)
Closest name: Bluetiful (#3c69e7)Relative luminance 0.1394

Colors that go with #1d5fe2

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 →

#e2a01d

#1dc1e2 · #3e1de2

#e21d5f · #5fe21d

Split-complementary

Open in tool →

#e23e1d · #c1e21d

#e21dc1 · #e2a01d · #1de23e

Contrast

#1d5fe2 as textRatioAAAA largeAAAFix
Aaon white
5.54:1passpassfail
  • AAA: use #1950be as the text (7.16:1)
Aaon black
3.79:1failpassfail
  • AA: use #346fe5 as the text (4.55:1)
  • AAA: use #6a95ec as the text (7.12:1)
  • AA: or shift the background to #e8e8e8 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1d5fe2 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#1d5fe2 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1d5fe2
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 #1d5fe2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1d5fe2-9ca5c4-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