Color

#38ace5

#38ace5
hex#38ace5
rgbrgb(56, 172, 229)
hslhsl(200, 77%, 56%)
oklchoklch(0.705 0.13 234.8)
Closest name: Cerulean (#55aaee)Relative luminance 0.36

Colors that go with #38ace5

Charcoal, Peru 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 →

#e57238

#38e5c8 · #3855e5

#e538ac · #ace538

Split-complementary

Open in tool →

#e53855 · #e5c838

#c838e5 · #e57238 · #55e538

Contrast

#38ace5 as textRatioAAAA largeAAAFix
Aaon white
2.56:1failfailfail
  • AA: use #177db0 as the text (4.57:1)
  • AAA: use #115d83 as the text (7.2:1)
  • AA: or shift the background to #383838 (4.58:1)
  • AAA: or shift the background to #171717 (7:1)
Aaon black
8.2:1passpasspassPasses 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 #38ace5 as the background.

Brands using this color

Fonts for this mood

#38ace5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #38ace5
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 #38ace5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/38ace5-9cb2c4-df4e64-1f232d-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