Color

#0d2b4e

#0d2b4e
hex#0d2b4e
rgbrgb(13, 43, 78)
hslhsl(212, 71%, 18%)
oklchoklch(0.288 0.073 254.5)
Closest name: Midnight Ocean (#0f2d4d)Relative luminance 0.0236

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4e300d

#0d4c4e · #0f0d4e

#4e0d2c · #2c4e0d

Split-complementary

Open in tool →

#4e0f0d · #4c4e0d

#4e0d4c · #4e300d · #0d4e0f

Contrast

#0d2b4e as textRatioAAAA largeAAAFix
Aaon white
14.26:1passpasspassPasses AAA — no fix needed.
Aaon black
1.47:1failfailfail
  • AA: use #2375d1 as the text (4.54:1)
  • AAA: use #599ae3 as the text (7.16:1)
  • AA: or shift the background to #919191 (4.52:1)
  • AAA: or shift the background to #b8b8b8 (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0d2b4e as the background.

Brands using this color

Fonts for this mood

#0d2b4e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0d2b4e
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 #0d2b4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0d2b4e-9caac4-df564e-1f202d-e9f1f1?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