Color

#0ca5d4

#0ca5d4
hex#0ca5d4
rgbrgb(12, 165, 212)
hslhsl(194, 89%, 44%)
oklchoklch(0.674 0.129 227.5)
Closest name: Blue Burst (#309cd0)Relative luminance 0.3174

Colors that go with #0ca5d4

Charcoal, Tomato 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 →

#d43b0c

#0cd49f · #0c42d4

#d40ca5 · #a5d40c

Split-complementary

Open in tool →

#d40c42 · #d49f0c

#9f0cd4 · #d43b0c · #42d40c

Contrast

#0ca5d4 as textRatioAAAA largeAAAFix
Aaon white
2.86:1failfailfail
  • AA: use #0a80a4 as the text (4.53:1)
  • AAA: use #075e78 as the text (7.29:1)
  • AA: or shift the background to #303030 (4.62:1)
  • AAA: or shift the background to #080808 (7.01:1)
Aaon black
7.35:1passpasspassPasses 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 #0ca5d4 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

#0ca5d4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0ca5d4
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 #0ca5d4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0ca5d4-9cb6c4-df4e72-1f242d-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