Color

#5bd1ec

#5bd1ec
hex#5bd1ec
rgbrgb(91, 209, 236)
hslhsl(191, 79%, 64%)
oklchoklch(0.804 0.112 215.3)
Closest name: Sky Blue (#87ceeb)Relative luminance 0.5388

Colors that go with #5bd1ec

Charcoal, Dark Salmon 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 →

#ec755b

#5becbe · #5b89ec

#ec5bd1 · #d1ec5b

Split-complementary

Open in tool →

#ec5b89 · #ecbe5b

#be5bec · #ec755b · #89ec5b

Contrast

#5bd1ec as textRatioAAAA largeAAAFix
Aaon white
1.78:1failfailfail
  • AA: use #127e97 as the text (4.71:1)
  • AAA: use #0d6072 as the text (7.16:1)
  • AA: or shift the background to #4f4f4f (4.59:1)
  • AAA: or shift the background to #333333 (7.09:1)
Aaon black
11.78:1passpasspassPasses 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 #5bd1ec as the background.

Brands using this color

Fonts for this mood

#5bd1ec reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5bd1ec
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 #5bd1ec and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5bd1ec-a2b6be-df4e7a-1f252d-e9f1ef?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