Color

#0a3452

#0a3452
hex#0a3452
rgbrgb(10, 52, 82)
hslhsl(205, 78%, 18%)
oklchoklch(0.314 0.07 244.9)
Closest name: Beyond the Stars (#0a3251)Relative luminance 0.0313

Colors that go with #0a3452

Royal Blue, Teal and Sienna 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 →

#52280a

#0a524c · #0a1052

#520a34 · #34520a

Split-complementary

Open in tool →

#520a10 · #524c0a

#4c0a52 · #52280a · #10520a

Contrast

#0a3452 as textRatioAAAA largeAAAFix
Aaon white
12.92:1passpasspassPasses AAA — no fix needed.
Aaon black
1.63:1failfailfail
  • AA: use #1879bf as the text (4.53:1)
  • AAA: use #379de6 as the text (7.13:1)
  • AA: or shift the background to #999999 (4.53:1)
  • AAA: or shift the background to #bfbfbf (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0a3452 as the background.

Brands using this color

Fonts for this mood

#0a3452 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0a3452
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 #0a3452 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0a3452-9cafc4-df4e58-1f212d-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