Color

#3bb0bf

#3bb0bf
hex#3bb0bf
rgbrgb(59, 176, 191)
hslhsl(187, 53%, 49%)
oklchoklch(0.699 0.104 207.3)
Closest name: Aquarius (#2db0ce)Relative luminance 0.3574

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bf4a3b

#3bbf8c · #3b6dbf

#bf3bb0 · #b0bf3b

Split-complementary

Open in tool →

#bf3b6d · #bf8c3b

#8c3bbf · #bf4a3b · #6dbf3b

Contrast

#3bb0bf as textRatioAAAA largeAAAFix
Aaon white
2.58:1failfailfail
  • AA: use #2b818c as the text (4.54:1)
  • AAA: use #206169 as the text (7.06:1)
  • AA: or shift the background to #383838 (4.55:1)
  • AAA: or shift the background to #141414 (7.15:1)
Aaon black
8.15:1passpasspassPasses 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 #3bb0bf 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

#3bb0bf reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3bb0bf
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 #3bb0bf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3bb0bf-a2b8be-df4e83-1f262d-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