Color

#55d5ec

#55d5ec
hex#55d5ec
rgbrgb(85, 213, 236)
hslhsl(189, 80%, 63%)
oklchoklch(0.811 0.115 211.5)
Closest name: Sky Blue (#87ceeb)Relative luminance 0.5558

Colors that go with #55d5ec

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 →

#ec6c55

#55ecb7 · #558aec

#ec55d5 · #d5ec55

Split-complementary

Open in tool →

#ec558a · #ecb755

#b755ec · #ec6c55 · #8aec55

Contrast

#55d5ec as textRatioAAAA largeAAAFix
Aaon white
1.73:1failfailfail
  • AA: use #107f93 as the text (4.69:1)
  • AAA: use #0c5f6e as the text (7.3:1)
  • AA: or shift the background to #525252 (4.51:1)
  • AAA: or shift the background to #333333 (7.29:1)
Aaon black
12.12:1passpasspassPasses 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 #55d5ec as the background.

Brands using this color

Fonts for this mood

#55d5ec reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #55d5ec
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 #55d5ec and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/55d5ec-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