Color

#1bb4da

#1bb4da
hex#1bb4da
rgbrgb(27, 180, 218)
hslhsl(192, 78%, 48%)
oklchoklch(0.714 0.127 220.9)
Closest name: Aquarius (#2db0ce)Relative luminance 0.3794

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#da411b

#1bdaa1 · #1b54da

#da1bb4 · #b4da1b

Split-complementary

Open in tool →

#da1b54 · #daa11b

#a11bda · #da411b · #54da1b

Contrast

#1bb4da as textRatioAAAA largeAAAFix
Aaon white
2.45:1failfailfail
  • AA: use #137f9a as the text (4.64:1)
  • AAA: use #0f6176 as the text (7.02:1)
  • AA: or shift the background to #3b3b3b (4.58:1)
  • AAA: or shift the background to #1a1a1a (7.12:1)
Aaon black
8.59:1passpasspassPasses 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 #1bb4da as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#1bb4da reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1bb4da
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #1bb4da and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1bb4da-a2b5be-df4e77-1f242d-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