Color

#0d285e

#0d285e
hex#0d285e
rgbrgb(13, 40, 94)
hslhsl(220, 76%, 21%)
oklchoklch(0.293 0.102 262.2)
Closest name: Black Sea Night (#052462)Relative luminance 0.0241

Tints & shades

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

Harmonies

Complementary

Open in tool →

#5e430d

#0d515e · #1a0d5e

#5e0d28 · #285e0d

Split-complementary

Open in tool →

#5e1a0d · #515e0d

#5e0d51 · #5e430d · #0d5e1a

Contrast

#0d285e as textRatioAAAA largeAAAFix
Aaon white
14.17:1passpasspassPasses AAA — no fix needed.
Aaon black
1.48:1failfailfail
  • AA: use #356fe3 as the text (4.53:1)
  • AAA: use #6b96eb as the text (7.19:1)
  • AA: or shift the background to #949494 (4.67:1)
  • AAA: or shift the background to #b8b8b8 (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0d285e 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

#0d285e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0d285e
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 #0d285e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0d285e-9ca5c4-df694e-211f2d-e9f0f1?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