Color

#33b5cc

#33b5cc
hex#33b5cc
rgbrgb(51, 181, 204)
hslhsl(189, 60%, 50%)
oklchoklch(0.714 0.112 212.4)
Closest name: Aquarius (#2db0ce)Relative luminance 0.3811

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cc4a33

#33cc96 · #3369cc

#cc33b5 · #b5cc33

Split-complementary

Open in tool →

#cc3369 · #cc9633

#9633cc · #cc4a33 · #69cc33

Contrast

#33b5cc as textRatioAAAA largeAAAFix
Aaon white
2.44:1failfailfail
  • AA: use #247f8f as the text (4.66:1)
  • AAA: use #1b5e6a as the text (7.35:1)
  • AA: or shift the background to #3b3b3b (4.6:1)
  • AAA: or shift the background to #1a1a1a (7.15:1)
Aaon black
8.62:1passpasspassPasses 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 #33b5cc as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#33b5cc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #33b5cc
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #33b5cc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/33b5cc-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