Color

#42bfcd

#42bfcd
hex#42bfcd
rgbrgb(66, 191, 205)
hslhsl(186, 58%, 53%)
oklchoklch(0.742 0.109 205.8)
Closest name: Blue Bobbin (#52b4ca)Relative luminance 0.4283

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cd5042

#42cd95 · #4279cd

#cd42bf · #bfcd42

Split-complementary

Open in tool →

#cd4279 · #cd9542

#9542cd · #cd5042 · #79cd42

Contrast

#42bfcd as textRatioAAAA largeAAAFix
Aaon white
2.2:1failfailfail
  • AA: use #247f89 as the text (4.7:1)
  • AAA: use #1c6169 as the text (7.09:1)
  • AA: or shift the background to #424242 (4.58:1)
  • AAA: or shift the background to #242424 (7.07:1)
Aaon black
9.57:1passpasspassPasses 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 #42bfcd 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

#42bfcd reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #42bfcd
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 #42bfcd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/42bfcd-a2b8be-df4e86-1f262d-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