Color

#189a5b

#189a5b
hex#189a5b
rgbrgb(24, 154, 91)
hslhsl(151, 73%, 35%)
oklchoklch(0.606 0.142 155.3)
Closest name: Eucalyptus (#329760)Relative luminance 0.2406

Colors that go with #189a5b

Charcoal, Crimson and 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 →

#9a1857

#189a1a · #18989a

#5b189a · #9a5b18

Split-complementary

Open in tool →

#9a1898 · #9a1a18

#1a189a · #9a1857 · #989a18

Contrast

#189a5b as textRatioAAAA largeAAAFix
Aaon white
3.61:1failpassfail
  • AA: use #15844e as the text (4.73:1)
  • AAA: use #10653c as the text (7.12:1)
  • AA: or shift the background to #1f1f1f (4.56:1)
Aaon black
5.81:1passpassfail
  • AAA: use #1bac66 as the text (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #189a5b as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #189a5b
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 #189a5b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/189a5b-a2beb4-d459d0-1f2d2c-e9f1ea?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