Color

#15efbc

#15efbc
hex#15efbc
rgbrgb(21, 239, 188)
hslhsl(166, 87%, 51%)
oklchoklch(0.848 0.166 169.8)
Closest name: Aquamarine (#2ee8bb)Relative luminance 0.6552

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#ef1548

#15ef4f · #15b5ef

#bc15ef · #efbc15

Split-complementary

Open in tool →

#ef15b5 · #ef4f15

#4f15ef · #ef1548 · #b5ef15

Contrast

#15efbc as textRatioAAAA largeAAAFix
Aaon white
1.49:1failfailfail
  • AA: use #098669 as the text (4.54:1)
  • AAA: use #07644e as the text (7.14:1)
  • AA: or shift the background to #595959 (4.7:1)
  • AAA: or shift the background to #3d3d3d (7.3:1)
Aaon black
14.1:1passpasspassPasses 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 #15efbc 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 #15efbc
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #15efbc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/15efbc-a2bebb-d459b1-1f2a2d-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