Color

#0a232f

#0a232f
hex#0a232f
rgbrgb(10, 35, 47)
hslhsl(199, 65%, 11%)
oklchoklch(0.243 0.038 232.2)
Closest name: Midnight Dreams (#002233)Relative luminance 0.0147

Tints & shades

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

Harmonies

Complementary

Open in tool →

#2e150a

#0a2e28 · #0a112e

#2e0a23 · #232e0a

Split-complementary

Open in tool →

#2e0a11 · #2e280a

#280a2e · #2e150a · #112e0a

Contrast

#0a232f as textRatioAAAA largeAAAFix
Aaon white
16.22:1passpasspassPasses AAA — no fix needed.
Aaon black
1.29:1failfailfail
  • AA: use #247ea8 as the text (4.62:1)
  • AAA: use #31a0d3 as the text (7.1:1)
  • AA: or shift the background to #878787 (4.52:1)
  • AAA: or shift the background to #ababab (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0a232f as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#0a232f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0a232f
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #0a232f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0a232f-9cb3c4-df4e66-1f232d-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