Color

#4bbbdd

#4bbbdd
hex#4bbbdd
rgbrgb(75, 187, 221)
hslhsl(194, 68%, 58%)
oklchoklch(0.742 0.111 221.5)
Closest name: Blue Martini (#52b4d3)Relative luminance 0.4226

Tints & shades

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

Harmonies

Complementary

Open in tool →

#dd6d4b

#4bddb6 · #4b72dd

#dd4bbb · #bbdd4b

Split-complementary

Open in tool →

#dd4b72 · #ddb64b

#b64bdd · #dd6d4b · #72dd4b

Contrast

#4bbbdd as textRatioAAAA largeAAAFix
Aaon white
2.22:1failfailfail
  • AA: use #1d7d9a as the text (4.72:1)
  • AAA: use #165e74 as the text (7.27:1)
  • AA: or shift the background to #424242 (4.52:1)
  • AAA: or shift the background to #212121 (7.25:1)
Aaon black
9.45:1passpasspassPasses 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 #4bbbdd 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

#4bbbdd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4bbbdd
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 #4bbbdd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4bbbdd-9cb6c4-df4e72-1f242d-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