Color

#37b2eb

#37b2eb
hex#37b2eb
rgbrgb(55, 178, 235)
hslhsl(199, 82%, 57%)
oklchoklch(0.722 0.133 233.5)
Closest name: Blue Bikini (#00bbee)Relative luminance 0.3865

Colors that go with #37b2eb

Charcoal, Dark Orange and Amber lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#eb7037

#37ebca · #3758eb

#eb37b2 · #b2eb37

Split-complementary

Open in tool →

#eb3758 · #ebca37

#ca37eb · #eb7037 · #58eb37

Contrast

#37b2eb as textRatioAAAA largeAAAFix
Aaon white
2.41:1failfailfail
  • AA: use #117eb0 as the text (4.53:1)
  • AAA: use #0d5d82 as the text (7.23:1)
  • AA: or shift the background to #3d3d3d (4.52:1)
  • AAA: or shift the background to #1c1c1c (7.08:1)
Aaon black
8.73:1passpasspassPasses 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 #37b2eb as the background.

Brands using this color

Fonts for this mood

#37b2eb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #37b2eb
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #37b2eb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/37b2eb-9cb3c4-df4e66-1f232d-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