Color

#28dffb

#28dffb
hex#28dffb
rgbrgb(40, 223, 251)
hslhsl(188, 96%, 57%)
oklchoklch(0.831 0.139 211.4)
Closest name: Aqua (#0ff0fe)Relative luminance 0.6019

Colors that go with #28dffb

Charcoal, Dodger Blue and Taupe 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.

Real palettes that use #28dffb

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fb4428

#28fbad · #2875fb

#fb28df · #dffb28

Split-complementary

Open in tool →

#fb2875 · #fbad28

#ad28fb · #fb4428 · #75fb28

Contrast

#28dffb as textRatioAAAA largeAAAFix
Aaon white
1.61:1failfailfail
  • AA: use #038296 as the text (4.53:1)
  • AAA: use #02606e as the text (7.24:1)
  • AA: or shift the background to #545454 (4.7:1)
  • AAA: or shift the background to #383838 (7.28:1)
Aaon black
13.04:1passpasspassPasses 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 #28dffb as the background.

Brands using this color

Palettes built around it

Fonts for this mood

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

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

tool url/palettes/new/28dffb-a2b7be-df4e81-1f252d-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