Color

#28b3bd

#28b3bd
hex#28b3bd
rgbrgb(40, 179, 189)
hslhsl(184, 65%, 45%)
oklchoklch(0.702 0.112 202.5)
Closest name: lightseagreen (#20b2aa)Relative luminance 0.3637

Colors that go with #28b3bd

Charcoal, Tomato and Denim 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 →

#bd3228

#28bd7d · #2869bd

#bd28b3 · #b3bd28

Split-complementary

Open in tool →

#bd2869 · #bd7d28

#7d28bd · #bd3228 · #69bd28

Contrast

#28b3bd as textRatioAAAA largeAAAFix
Aaon white
2.54:1failfailfail
  • AA: use #1d8087 as the text (4.68:1)
  • AAA: use #156065 as the text (7.26:1)
  • AA: or shift the background to #383838 (4.62:1)
  • AAA: or shift the background to #171717 (7.06:1)
Aaon black
8.27:1passpasspassPasses 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 #28b3bd as the background.

Brands using this color

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

Fonts for this mood

#28b3bd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #28b3bd
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 #28b3bd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/28b3bd-a2b9be-df4e8a-1f262d-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