Color

#3aa3bb

#3aa3bb
hex#3aa3bb
rgbrgb(58, 163, 187)
hslhsl(191, 53%, 48%)
oklchoklch(0.666 0.1 216)
Closest name: Blue Ocean (#009dc4)Relative luminance 0.3068

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bb513a

#3abb92 · #3a63bb

#bb3aa3 · #a3bb3a

Split-complementary

Open in tool →

#bb3a63 · #bb923a

#923abb · #bb513a · #63bb3a

Contrast

#3aa3bb as textRatioAAAA largeAAAFix
Aaon white
2.94:1failfailfail
  • AA: use #2c7e90 as the text (4.67:1)
  • AAA: use #225f6d as the text (7.18:1)
  • AA: or shift the background to #2e2e2e (4.61:1)
  • AAA: or shift the background to #030303 (7.01:1)
Aaon black
7.14:1passpasspassPasses 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 #3aa3bb 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

#3aa3bb reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3aa3bb
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 #3aa3bb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3aa3bb-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