Color

#28bfcc

#28bfcc
hex#28bfcc
rgbrgb(40, 191, 204)
hslhsl(185, 67%, 48%)
oklchoklch(0.737 0.118 204)
Closest name: Blue Bobbin (#52b4ca)Relative luminance 0.4207

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cc3628

#28cc88 · #286dcc

#cc28bf · #bfcc28

Split-complementary

Open in tool →

#cc286d · #cc8828

#8828cc · #cc3628 · #6dcc28

Contrast

#28bfcc as textRatioAAAA largeAAAFix
Aaon white
2.23:1failfailfail
  • AA: use #1b7f88 as the text (4.73:1)
  • AAA: use #145f66 as the text (7.35:1)
  • AA: or shift the background to #424242 (4.51:1)
  • AAA: or shift the background to #212121 (7.22:1)
Aaon black
9.41:1passpasspassPasses 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 #28bfcc as the background.

Brands using this color

Fonts for this mood

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

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

tool url/palettes/new/28bfcc-a2b8be-df4e88-1f262d-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