Color

#1bb2c5

#1bb2c5
hex#1bb2c5
rgbrgb(27, 178, 197)
hslhsl(187, 76%, 44%)
oklchoklch(0.701 0.117 208.7)
Closest name: Aquarius (#2db0ce)Relative luminance 0.3611

Colors that go with #1bb2c5

Charcoal, Tomato and Denim 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 →

#c52f1b

#1bc584 · #1b5cc5

#c51bb2 · #b2c51b

Split-complementary

Open in tool →

#c51b5c · #c5841b

#841bc5 · #c52f1b · #5cc51b

Contrast

#1bb2c5 as textRatioAAAA largeAAAFix
Aaon white
2.55:1failfailfail
  • AA: use #148190 as the text (4.59:1)
  • AAA: use #0f616c as the text (7.13:1)
  • AA: or shift the background to #383838 (4.59:1)
  • AAA: or shift the background to #171717 (7.02:1)
Aaon black
8.22:1passpasspassPasses 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 #1bb2c5 as the background.

Brands using this color

Fonts for this mood

#1bb2c5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1bb2c5
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 #1bb2c5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1bb2c5-a2b8be-df4e83-1f262d-e9f1ee?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