Color

#3aa5cf

#3aa5cf
hex#3aa5cf
rgbrgb(58, 165, 207)
hslhsl(197, 61%, 52%)
oklchoklch(0.679 0.113 228.4)
Closest name: Cousteau (#55a9d6)Relative luminance 0.3231

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cf643a

#3acfaf · #3a5acf

#cf3aa5 · #a5cf3a

Split-complementary

Open in tool →

#cf3a5a · #cfaf3a

#af3acf · #cf643a · #5acf3a

Contrast

#3aa5cf as textRatioAAAA largeAAAFix
Aaon white
2.81:1failfailfail
  • AA: use #277ea0 as the text (4.59:1)
  • AAA: use #1d5d77 as the text (7.28:1)
  • AA: or shift the background to #303030 (4.69:1)
  • AAA: or shift the background to #0a0a0a (7.04:1)
Aaon black
7.46:1passpasspassPasses 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 #3aa5cf 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

#3aa5cf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3aa5cf
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 #3aa5cf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3aa5cf-9cb4c4-df4e6b-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