Color

#15efcb

#15efcb
hex#15efcb
rgbrgb(21, 239, 203)
hslhsl(170, 87%, 51%)
oklchoklch(0.852 0.157 176.3)
Closest name: Fake Jade (#13eac9)Relative luminance 0.662

Colors that go with #15efcb

Charcoal, Deep Sky Blue and Taupe 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 →

#ef153a

#15ef5e · #15a6ef

#cb15ef · #efcb15

Split-complementary

Open in tool →

#ef15a6 · #ef5e15

#5e15ef · #ef153a · #a6ef15

Contrast

#15efcb as textRatioAAAA largeAAAFix
Aaon white
1.47:1failfailfail
  • AA: use #098671 as the text (4.51:1)
  • AAA: use #076455 as the text (7.09:1)
  • AA: or shift the background to #5c5c5c (4.53:1)
  • AAA: or shift the background to #404040 (7.03:1)
Aaon black
14.24:1passpasspassPasses 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 #15efcb as the background.

Brands using this color

mcpConnect your agent — build around #15efcb
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 #15efcb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/15efcb-a2bebd-d459a9-1f292d-e9f1ec?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