Color

#5bb2e1

#5bb2e1
hex#5bb2e1
rgbrgb(91, 178, 225)
hslhsl(201, 69%, 62%)
oklchoklch(0.728 0.108 234.6)
Closest name: Blue Martini (#52b4d3)Relative luminance 0.395

Tints & shades

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

Harmonies

Complementary

Open in tool →

#e18a5b

#5be1cd · #5b6fe1

#e15bb2 · #b2e15b

Split-complementary

Open in tool →

#e15b6f · #e1cd5b

#cd5be1 · #e18a5b · #6fe15b

Contrast

#5bb2e1 as textRatioAAAA largeAAAFix
Aaon white
2.36:1failfailfail
  • AA: use #207bac as the text (4.68:1)
  • AAA: use #185c81 as the text (7.27:1)
  • AA: or shift the background to #3d3d3d (4.6:1)
  • AAA: or shift the background to #1c1c1c (7.22:1)
Aaon black
8.9:1passpasspassPasses 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 #5bb2e1 as the background.

Brands using this color

Fonts for this mood

#5bb2e1 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5bb2e1
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 #5bb2e1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5bb2e1-9cb1c4-df4e62-1f222d-e9f1f0?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