Color

#0d2a4e

#0d2a4e
hex#0d2a4e
rgbrgb(13, 42, 78)
hslhsl(213, 71%, 18%)
oklchoklch(0.285 0.075 255.6)
Closest name: Midnight Ocean (#0f2d4d)Relative luminance 0.0229

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4e310d

#0d4b4e · #110d4e

#4e0d2b · #2b4e0d

Split-complementary

Open in tool →

#4e110d · #4b4e0d

#4e0d4b · #4e310d · #0d4e11

Contrast

#0d2a4e as textRatioAAAA largeAAAFix
Aaon white
14.4:1passpasspassPasses AAA — no fix needed.
Aaon black
1.46:1failfailfail
  • AA: use #2474d6 as the text (4.54:1)
  • AAA: use #5e9ae4 as the text (7.22:1)
  • AA: or shift the background to #919191 (4.57:1)
  • AAA: or shift the background to #b5b5b5 (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0d2a4e as the background.

Brands using this color

Fonts for this mood

#0d2a4e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0d2a4e
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 #0d2a4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0d2a4e-9ca9c4-df584e-1f202d-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