Color

#1cb5ba

#1cb5ba
hex#1cb5ba
rgbrgb(28, 181, 186)
hslhsl(182, 74%, 42%)
oklchoklch(0.704 0.115 198.5)
Closest name: lightseagreen (#20b2aa)Relative luminance 0.3684

Colors that go with #1cb5ba

Charcoal, Denim and Dodger Blue 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 →

#ba211c

#1cba70 · #1c66ba

#ba1cb5 · #b5ba1c

Split-complementary

Open in tool →

#ba1c66 · #ba701c

#701cba · #ba211c · #66ba1c

Contrast

#1cb5ba as textRatioAAAA largeAAAFix
Aaon white
2.51:1failfailfail
  • AA: use #148185 as the text (4.66:1)
  • AAA: use #0f6366 as the text (7.01:1)
  • AA: or shift the background to #383838 (4.67:1)
  • AAA: or shift the background to #171717 (7.14:1)
Aaon black
8.37:1passpasspassPasses 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 #1cb5ba as the background.

Brands using this color

Fonts for this mood

#1cb5ba reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1cb5ba
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 #1cb5ba and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1cb5ba-a2babe-d45990-1f272d-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