Color

#1ca3ba

#1ca3ba
hex#1ca3ba
rgbrgb(28, 163, 186)
hslhsl(189, 74%, 42%)
oklchoklch(0.659 0.11 213)
Closest name: Blue Ocean (#009dc4)Relative luminance 0.2999

Colors that go with #1ca3ba

Charcoal, Orange Red and Amber 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 →

#ba341c

#1cba83 · #1c53ba

#ba1ca3 · #a3ba1c

Split-complementary

Open in tool →

#ba1c53 · #ba831c

#831cba · #ba341c · #53ba1c

Contrast

#1ca3ba as textRatioAAAA largeAAAFix
Aaon white
3:1failpassfail
  • AA: use #168092 as the text (4.63:1)
  • AAA: use #11616f as the text (7.09:1)
  • AA: or shift the background to #2e2e2e (4.52:1)
Aaon black
7:1passpassfail
  • AAA: use #1da6bf as the text (7.26:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1ca3ba as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#1ca3ba reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1ca3ba
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 #1ca3ba and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1ca3ba-a2b7be-df4e7e-1f252d-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