Color

#030d59

#030d59
hex#030d59
rgbrgb(3, 13, 89)
hslhsl(233, 93%, 18%)
oklchoklch(0.23 0.132 265.6)
Closest name: Interstellar Blue (#001155)Relative luminance 0.0103

Tints & shades

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

Harmonies

Complementary

Open in tool →

#594f03

#033859 · #240359

#59030d · #0d5903

Split-complementary

Open in tool →

#592403 · #385903

#590338 · #594f03 · #035924

Contrast

#030d59 as textRatioAAAA largeAAAFix
Aaon white
17.42:1passpasspassPasses AAA — no fix needed.
Aaon black
1.21:1failfailfail
  • AA: use #5366f9 as the text (4.64:1)
  • AAA: use #7f8dfa as the text (7.09:1)
  • AA: or shift the background to #828282 (4.53:1)
  • AAA: or shift the background to #a6a6a6 (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #030d59 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

#030d59 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #030d59
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 #030d59 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/030d59-9c9cc4-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