Color

#1da7dd

#1da7dd
hex#1da7dd
rgbrgb(29, 167, 221)
hslhsl(197, 77%, 49%)
oklchoklch(0.685 0.133 231.6)
Closest name: Blue Burst (#309cd0)Relative luminance 0.3312

Colors that go with #1da7dd

Charcoal, Tomato and Bronze 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 →

#dd531d

#1dddb3 · #1d46dd

#dd1da7 · #a7dd1d

Split-complementary

Open in tool →

#dd1d46 · #ddb31d

#b31ddd · #dd531d · #46dd1d

Contrast

#1da7dd as textRatioAAAA largeAAAFix
Aaon white
2.75:1failfailfail
  • AA: use #167ea7 as the text (4.59:1)
  • AAA: use #105f7e as the text (7.09:1)
  • AA: or shift the background to #333333 (4.59:1)
  • AAA: or shift the background to #0d0d0d (7.06:1)
Aaon black
7.62:1passpasspassPasses 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 #1da7dd as the background.

Brands using this color

Fonts for this mood

#1da7dd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1da7dd
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 #1da7dd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1da7dd-9cb4c4-df4e6b-1f232d-e9f1ef?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