Color

#3bc5de

#3bc5de
hex#3bc5de
rgbrgb(59, 197, 222)
hslhsl(189, 71%, 55%)
oklchoklch(0.762 0.119 212.6)
Closest name: darkturquoise (#00ced1)Relative luminance 0.4614

Tints & shades

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

Harmonies

Complementary

Open in tool →

#de533b

#3bdea5 · #3b74de

#de3bc5 · #c5de3b

Split-complementary

Open in tool →

#de3b74 · #dea53b

#a53bde · #de533b · #74de3b

Contrast

#3bc5de as textRatioAAAA largeAAAFix
Aaon white
2.05:1failfailfail
  • AA: use #198294 as the text (4.5:1)
  • AAA: use #125f6d as the text (7.28:1)
  • AA: or shift the background to #474747 (4.52:1)
  • AAA: or shift the background to #292929 (7.09:1)
Aaon black
10.23:1passpasspassPasses 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 #3bc5de 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

#3bc5de reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3bc5de
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 #3bc5de and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3bc5de-a2b7be-df4e7e-1f252d-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