Color

#3aa6bb

#3aa6bb
hex#3aa6bb
rgbrgb(58, 166, 187)
hslhsl(190, 53%, 48%)
oklchoklch(0.673 0.1 213.2)
Closest name: Aquarius (#2db0ce)Relative luminance 0.3176

Colors that go with #3aa6bb

Charcoal, Tomato and Midnight 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.

Real palettes that use #3aa6bb

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bb4f3a

#3abb90 · #3a65bb

#bb3aa6 · #a6bb3a

Split-complementary

Open in tool →

#bb3a65 · #bb903a

#903abb · #bb4f3a · #65bb3a

Contrast

#3aa6bb as textRatioAAAA largeAAAFix
Aaon white
2.86:1failfailfail
  • AA: use #2c8090 as the text (4.57:1)
  • AAA: use #22616d as the text (7:1)
  • AA: or shift the background to #303030 (4.62:1)
  • AAA: or shift the background to #080808 (7.01:1)
Aaon black
7.35:1passpasspassPasses 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 #3aa6bb 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

#3aa6bb reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3aa6bb
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 #3aa6bb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3aa6bb-a2b6be-df4e7c-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