Color

#030d4e

#030d4e
hex#030d4e
rgbrgb(3, 13, 78)
hslhsl(232, 93%, 16%)
oklchoklch(0.215 0.117 265.8)
Closest name: Interstellar Blue (#001155)Relative luminance 0.0086

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4f4503

#03334f · #1f034f

#4f030d · #0d4f03

Split-complementary

Open in tool →

#4f1f03 · #334f03

#4f0333 · #4f4503 · #034f1f

Contrast

#030d4e as textRatioAAAA largeAAAFix
Aaon white
17.93:1passpasspassPasses AAA — no fix needed.
Aaon black
1.17:1failfailfail
  • AA: use #4e65f9 as the text (4.55:1)
  • AAA: use #7f8ffa as the text (7.21:1)
  • AA: or shift the background to #808080 (4.54:1)
  • AAA: or shift the background to #a3a3a3 (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #030d4e 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

#030d4e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #030d4e
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 #030d4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/030d4e-9c9dc4-df864e-231f2d-e9eef1?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