Color

#0a1233

#0a1233
hex#0a1233
rgbrgb(10, 18, 51)
hslhsl(228, 67%, 12%)
oklchoklch(0.198 0.066 269.3)
Closest name: Infinite Night (#071037)Relative luminance 0.0074

Tints & shades

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

Harmonies

Complementary

Open in tool →

#332b0a

#0a2733 · #160a33

#330a12 · #12330a

Split-complementary

Open in tool →

#33160a · #27330a

#330a27 · #332b0a · #0a3316

Contrast

#0a1233 as textRatioAAAA largeAAAFix
Aaon white
18.3:1passpasspassPasses AAA — no fix needed.
Aaon black
1.15:1failfailfail
  • AA: use #506cdc as the text (4.52:1)
  • AAA: use #7f94e6 as the text (7.28:1)
  • AA: or shift the background to #808080 (4.63:1)
  • AAA: or shift the background to #a1a1a1 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0a1233 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

#0a1233 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0a1233
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 #0a1233 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0a1233-9c9fc4-df7c4e-231f2d-e9eff1?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