Color

#30b2cf

#30b2cf
hex#30b2cf
rgbrgb(48, 178, 207)
hslhsl(191, 62%, 50%)
oklchoklch(0.708 0.115 216.7)
Closest name: Aquarius (#2db0ce)Relative luminance 0.3697

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cf4d30

#30cf9c · #3063cf

#cf30b2 · #b2cf30

Split-complementary

Open in tool →

#cf3063 · #cf9c30

#9c30cf · #cf4d30 · #63cf30

Contrast

#30b2cf as textRatioAAAA largeAAAFix
Aaon white
2.5:1failfailfail
  • AA: use #238095 as the text (4.57:1)
  • AAA: use #1a6070 as the text (7.12:1)
  • AA: or shift the background to #383838 (4.69:1)
  • AAA: or shift the background to #171717 (7.17:1)
Aaon black
8.39:1passpasspassPasses 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 #30b2cf as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#30b2cf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #30b2cf
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 #30b2cf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/30b2cf-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