Color

#030f5e

#030f5e
hex#030f5e
rgbrgb(3, 15, 94)
hslhsl(232, 94%, 19%)
oklchoklch(0.239 0.136 265.4)
Closest name: Interstellar Blue (#001155)Relative luminance 0.0117

Tints & shades

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

Harmonies

Complementary

Open in tool →

#5e5203

#033d5e · #24035e

#5e030f · #0f5e03

Split-complementary

Open in tool →

#5e2403 · #3d5e03

#5e033d · #5e5203 · #035e24

Contrast

#030f5e as textRatioAAAA largeAAAFix
Aaon white
17.02:1passpasspassPasses AAA — no fix needed.
Aaon black
1.23:1failfailfail
  • AA: use #4d64f9 as the text (4.51:1)
  • AAA: use #7e8ffb as the text (7.21:1)
  • AA: or shift the background to #858585 (4.61:1)
  • AAA: or shift the background to #a8a8a8 (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #030f5e 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

#030f5e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #030f5e
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 #030f5e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/030f5e-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