Color

#1bb1de

#1bb1de
hex#1bb1de
rgbrgb(27, 177, 222)
hslhsl(194, 78%, 49%)
oklchoklch(0.709 0.13 225.3)
Closest name: Aquarius (#2db0ce)Relative luminance 0.3695

Colors that go with #1bb1de

Charcoal, Amber and Dark Orange 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 →

#de491b

#1bdeaa · #1b4fde

#de1bb1 · #b1de1b

Split-complementary

Open in tool →

#de1b4f · #deaa1b

#aa1bde · #de491b · #4fde1b

Contrast

#1bb1de as textRatioAAAA largeAAAFix
Aaon white
2.5:1failfailfail
  • AA: use #147e9f as the text (4.65:1)
  • AAA: use #0f5e76 as the text (7.28:1)
  • AA: or shift the background to #383838 (4.68:1)
  • AAA: or shift the background to #171717 (7.16:1)
Aaon black
8.39:1passpasspassPasses 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 #1bb1de as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#1bb1de reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1bb1de
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 #1bb1de and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1bb1de-9cb6c4-df4e72-1f242d-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