Color

#28d2b3

#28d2b3
hex#28d2b3
rgbrgb(40, 210, 179)
hslhsl(169, 68%, 49%)
oklchoklch(0.775 0.138 176.3)
Closest name: mediumaquamarine (#66cdaa)Relative luminance 0.498

Colors that go with #28d2b3

Charcoal, Blue and Crimson 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 →

#d22847

#28d25e · #289cd2

#b328d2 · #d2b328

Split-complementary

Open in tool →

#d2289c · #d25e28

#5e28d2 · #d22847 · #9cd228

Contrast

#28d2b3 as textRatioAAAA largeAAAFix
Aaon white
1.92:1failfailfail
  • AA: use #198571 as the text (4.53:1)
  • AAA: use #136354 as the text (7.14:1)
  • AA: or shift the background to #4a4a4a (4.63:1)
  • AAA: or shift the background to #2e2e2e (7.09:1)
Aaon black
10.96:1passpasspassPasses 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 #28d2b3 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 #28d2b3
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 #28d2b3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/28d2b3-a2bebc-d459ab-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