Color

#28bccc

#28bccc
hex#28bccc
rgbrgb(40, 188, 204)
hslhsl(186, 67%, 48%)
oklchoklch(0.729 0.118 206.3)
Closest name: Blue Bobbin (#52b4ca)Relative luminance 0.4078

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cc3928

#28cc8b · #286acc

#cc28bc · #bccc28

Split-complementary

Open in tool →

#cc286a · #cc8b28

#8b28cc · #cc3928 · #6acc28

Contrast

#28bccc as textRatioAAAA largeAAAFix
Aaon white
2.29:1failfailfail
  • AA: use #1c818d as the text (4.59:1)
  • AAA: use #15626a as the text (7.03:1)
  • AA: or shift the background to #404040 (4.52:1)
  • AAA: or shift the background to #212121 (7.02:1)
Aaon black
9.16:1passpasspassPasses 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 #28bccc as the background.

Brands using this color

Fonts for this mood

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

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

tool url/palettes/new/28bccc-a2b8be-df4e86-1f262d-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