Color

#0a545c

#0a545c
hex#0a545c
rgbrgb(10, 84, 92)
hslhsl(186, 80%, 20%)
oklchoklch(0.409 0.067 206.5)
Closest name: Abyssal Waters (#005765)Relative luminance 0.0718

Colors that go with #0a545c

Crimson, Steel Blue and Blue 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 →

#5c120a

#0a5c3b · #0a2b5c

#5c0a54 · #545c0a

Split-complementary

Open in tool →

#5c0a2b · #5c3b0a

#3b0a5c · #5c120a · #2b5c0a

Contrast

#0a545c as textRatioAAAA largeAAAFix
Aaon white
8.62:1passpasspassPasses AAA — no fix needed.
Aaon black
2.44:1failfailfail
  • AA: use #10828e as the text (4.61:1)
  • AAA: use #14a7b8 as the text (7.25:1)
  • AA: or shift the background to #bdbdbd (4.59:1)
  • AAA: or shift the background to #e8e8e8 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0a545c as the background.

Brands using this color

Fonts for this mood

#0a545c reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0a545c
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 #0a545c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0a545c-a2b8be-df4e86-1f262d-e9f1ee?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