Color

#030a5e

#030a5e
hex#030a5e
rgbrgb(3, 10, 94)
hslhsl(235, 94%, 19%)
oklchoklch(0.233 0.141 265.7)
Closest name: Interstellar Blue (#001155)Relative luminance 0.0104

Tints & shades

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

Harmonies

Complementary

Open in tool →

#5e5603

#03385e · #29035e

#5e030a · #0a5e03

Split-complementary

Open in tool →

#5e2903 · #385e03

#5e0338 · #5e5603 · #035e29

Contrast

#030a5e as textRatioAAAA largeAAAFix
Aaon white
17.37:1passpasspassPasses AAA — no fix needed.
Aaon black
1.21:1failfailfail
  • AA: use #5764fa as the text (4.61:1)
  • AAA: use #838dfb as the text (7.17:1)
  • AA: or shift the background to #828282 (4.52:1)
  • AAA: or shift the background to #a6a6a6 (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 #030a5e 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

#030a5e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #030a5e
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 #030a5e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/030a5e-9e9cc4-df8d4e-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