Color

#30b0df

#30b0df
hex#30b0df
rgbrgb(48, 176, 223)
hslhsl(196, 73%, 53%)
oklchoklch(0.71 0.126 228.1)
Closest name: Aquarius (#2db0ce)Relative luminance 0.3701

Colors that go with #30b0df

Charcoal, Amber and Dark Orange 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 →

#df5e30

#30dfb6 · #3058df

#df30b0 · #b0df30

Split-complementary

Open in tool →

#df3058 · #dfb630

#b630df · #df5e30 · #58df30

Contrast

#30b0df as textRatioAAAA largeAAAFix
Aaon white
2.5:1failfailfail
  • AA: use #197ea3 as the text (4.61:1)
  • AAA: use #13607c as the text (7.02:1)
  • AA: or shift the background to #383838 (4.69:1)
  • AAA: or shift the background to #171717 (7.17:1)
Aaon black
8.4:1passpasspassPasses 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 #30b0df as the background.

Brands using this color

Fonts for this mood

#30b0df reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #30b0df
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 #30b0df and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/30b0df-9cb5c4-df4e6e-1f232d-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