Color

#37a8cd

#37a8cd
hex#37a8cd
rgbrgb(55, 168, 205)
hslhsl(195, 60%, 51%)
oklchoklch(0.685 0.112 224.2)
Closest name: Aquarius (#2db0ce)Relative luminance 0.3323

Colors that go with #37a8cd

Charcoal, Terracotta 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 →

#cd5d37

#37cda8 · #375dcd

#cd37a8 · #a8cd37

Split-complementary

Open in tool →

#cd375d · #cda837

#a837cd · #cd5d37 · #5dcd37

Contrast

#37a8cd as textRatioAAAA largeAAAFix
Aaon white
2.75:1failfailfail
  • AA: use #277e9b as the text (4.62:1)
  • AAA: use #1e6076 as the text (7.02:1)
  • AA: or shift the background to #333333 (4.6:1)
  • AAA: or shift the background to #0d0d0d (7.08:1)
Aaon black
7.65:1passpasspassPasses 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 #37a8cd 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

#37a8cd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #37a8cd
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 #37a8cd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/37a8cd-9cb5c4-df4e70-1f242d-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