Color

#3ab0cb

#3ab0cb
hex#3ab0cb
rgbrgb(58, 176, 203)
hslhsl(191, 58%, 51%)
oklchoklch(0.704 0.109 216.4)
Closest name: Aquarius (#2db0ce)Relative luminance 0.3626

Colors that go with #3ab0cb

Charcoal, Denim and Dodger Blue 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 →

#cb543a

#3acb9d · #3a67cb

#cb3ab0 · #b0cb3a

Split-complementary

Open in tool →

#cb3a67 · #cb9d3a

#9d3acb · #cb543a · #67cb3a

Contrast

#3ab0cb as textRatioAAAA largeAAAFix
Aaon white
2.54:1failfailfail
  • AA: use #288195 as the text (4.5:1)
  • AAA: use #1d5e6d as the text (7.31:1)
  • AA: or shift the background to #383838 (4.61:1)
  • AAA: or shift the background to #171717 (7.05:1)
Aaon black
8.25:1passpasspassPasses 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 #3ab0cb as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#3ab0cb reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3ab0cb
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 #3ab0cb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3ab0cb-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