Color

#28daf6

#28daf6
hex#28daf6
rgbrgb(40, 218, 246)
hslhsl(188, 92%, 56%)
oklchoklch(0.817 0.136 211.8)
Closest name: Hammam Blue (#65dcd6)Relative luminance 0.5725

Colors that go with #28daf6

Charcoal, Crimson and Dodger Blue 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 #28daf6

Tints & shades

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

Harmonies

Complementary

Open in tool →

#f64328

#28f6aa · #2873f6

#f628da · #daf628

Split-complementary

Open in tool →

#f62873 · #f6aa28

#aa28f6 · #f64328 · #73f628

Contrast

#28daf6 as textRatioAAAA largeAAAFix
Aaon white
1.69:1failfailfail
  • AA: use #068093 as the text (4.65:1)
  • AAA: use #056271 as the text (7.02:1)
  • AA: or shift the background to #525252 (4.63:1)
  • AAA: or shift the background to #363636 (7.16:1)
Aaon black
12.45:1passpasspassPasses 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 #28daf6 as the background.

Brands using this color

Fonts for this mood

#28daf6 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #28daf6
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 #28daf6 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/28daf6-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