Color

#1da3e2

#1da3e2
hex#1da3e2
rgbrgb(29, 163, 226)
hslhsl(199, 77%, 50%)
oklchoklch(0.678 0.14 236.4)
Closest name: Blue Burst (#309cd0)Relative luminance 0.3195

Colors that go with #1da3e2

Charcoal, Bronze 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 →

#e25c1d

#1de2be · #1d41e2

#e21da3 · #a3e21d

Split-complementary

Open in tool →

#e21d41 · #e2be1d

#be1de2 · #e25c1d · #41e21d

Contrast

#1da3e2 as textRatioAAAA largeAAAFix
Aaon white
2.84:1failfailfail
  • AA: use #167cac as the text (4.65:1)
  • AAA: use #115f83 as the text (7.03:1)
  • AA: or shift the background to #303030 (4.64:1)
  • AAA: or shift the background to #080808 (7.05:1)
Aaon black
7.39:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1da3e2 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#1da3e2 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1da3e2
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 #1da3e2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1da3e2-9cb3c4-df4e66-1f232d-e9f1f0?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