Color

#4baffb

#4baffb
hex#4baffb
rgbrgb(75, 175, 251)
hslhsl(206, 96%, 64%)
oklchoklch(0.728 0.144 244.8)
Closest name: Cerulean (#55aaee)Relative luminance 0.3912

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fb974b

#4bfbf0 · #4b57fb

#fb4baf · #affb4b

Split-complementary

Open in tool →

#fb4b57 · #fbf04b

#f04bfb · #fb974b · #57fb4b

Contrast

#4baffb as textRatioAAAA largeAAAFix
Aaon white
2.38:1failfailfail
  • AA: use #0476cd as the text (4.69:1)
  • AAA: use #03599b as the text (7.23:1)
  • AA: or shift the background to #3d3d3d (4.56:1)
  • AAA: or shift the background to #1c1c1c (7.16:1)
Aaon black
8.82:1passpasspassPasses 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 #4baffb as the background.

Brands using this color

Fonts for this mood

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

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

tool url/palettes/new/4baffb-9caec4-df4e56-1f212d-e9f1f1?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