Color

#5bdef5

#5bdef5
hex#5bdef5
rgbrgb(91, 222, 245)
hslhsl(189, 89%, 66%)
oklchoklch(0.837 0.118 211.1)
Closest name: Hammam Blue (#65dcd6)Relative luminance 0.6106

Colors that go with #5bdef5

Charcoal, Deep Sky Blue and Crimson 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 →

#f5725b

#5bf5bf · #5b91f5

#f55bde · #def55b

Split-complementary

Open in tool →

#f55b91 · #f5bf5b

#bf5bf5 · #f5725b · #91f55b

Contrast

#5bdef5 as textRatioAAAA largeAAAFix
Aaon white
1.59:1failfailfail
  • AA: use #098095 as the text (4.63:1)
  • AAA: use #065f6f as the text (7.31:1)
  • AA: or shift the background to #575757 (4.55:1)
  • AAA: or shift the background to #3b3b3b (7.05:1)
Aaon black
13.21:1passpasspassPasses 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 #5bdef5 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

#5bdef5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5bdef5
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 #5bdef5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5bdef5-a2b7be-df4e7e-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