Color

#37adcd

#37adcd
hex#37adcd
rgbrgb(55, 173, 205)
hslhsl(193, 60%, 51%)
oklchoklch(0.697 0.111 220.1)
Closest name: Aquarius (#2db0ce)Relative luminance 0.3511

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cd5837

#37cda3 · #3762cd

#cd37ad · #adcd37

Split-complementary

Open in tool →

#cd3762 · #cda337

#a337cd · #cd5837 · #62cd37

Contrast

#37adcd as textRatioAAAA largeAAAFix
Aaon white
2.62:1failfailfail
  • AA: use #267e97 as the text (4.65:1)
  • AAA: use #1d6072 as the text (7.07:1)
  • AA: or shift the background to #363636 (4.62:1)
  • AAA: or shift the background to #141414 (7.04:1)
Aaon black
8.02:1passpasspassPasses 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 #37adcd 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

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

mcpConnect your agent — build around #37adcd
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 #37adcd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/37adcd-a2b5be-df4e75-1f242d-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