Color

#030a3f

#030a3f
hex#030a3f
rgbrgb(3, 10, 63)
hslhsl(233, 91%, 13%)
oklchoklch(0.19 0.099 266.5)
Closest name: Infinite Night (#071037)Relative luminance 0.006

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3f3803

#03283f · #1a033f

#3f030a · #0a3f03

Split-complementary

Open in tool →

#3f1a03 · #283f03

#3f0328 · #3f3803 · #033f1a

Contrast

#030a3f as textRatioAAAA largeAAAFix
Aaon white
18.77:1passpasspassPasses AAA — no fix needed.
Aaon black
1.12:1failfailfail
  • AA: use #5567f7 as the text (4.67:1)
  • AAA: use #808ef9 as the text (7.15:1)
  • AA: or shift the background to #7d7d7d (4.56:1)
  • AAA: or shift the background to #9e9e9e (7:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #030a3f as the background.

Brands using this color

Fonts for this mood

#030a3f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #030a3f
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 #030a3f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/030a3f-9c9cc4-df884e-241f2d-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