Color

#0a2b2f

#0a2b2f
hex#0a2b2f
rgbrgb(10, 43, 47)
hslhsl(186, 65%, 11%)
oklchoklch(0.267 0.038 206.5)
Closest name: Black Box (#0f282f)Relative luminance 0.02

Colors that go with #0a2b2f

Charcoal, Crimson 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.

Real palettes that use #0a2b2f

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#2e0d0a

#0a2e20 · #0a182e

#2e0a2b · #2b2e0a

Split-complementary

Open in tool →

#2e0a18 · #2e200a

#200a2e · #2e0d0a · #182e0a

Contrast

#0a2b2f as textRatioAAAA largeAAAFix
Aaon white
15.01:1passpasspassPasses AAA — no fix needed.
Aaon black
1.4:1failfailfail
  • AA: use #1d808b as the text (4.51:1)
  • AAA: use #26a7b5 as the text (7.28:1)
  • AA: or shift the background to #8f8f8f (4.64:1)
  • AAA: or shift the background to #b3b3b3 (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0a2b2f 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

#0a2b2f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0a2b2f
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 #0a2b2f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0a2b2f-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