Color

#0b033f

#0b033f
hex#0b033f
rgbrgb(11, 3, 63)
hslhsl(248, 91%, 13%)
oklchoklch(0.183 0.105 275.7)
Closest name: Endless Galaxy (#000044)Relative luminance 0.005

Tints & shades

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

Harmonies

Complementary

Open in tool →

#373f03

#03193f · #29033f

#3f0b03 · #033f0b

Split-complementary

Open in tool →

#3f2903 · #193f03

#3f0319 · #373f03 · #033f29

Contrast

#0b033f as textRatioAAAA largeAAAFix
Aaon white
19.11:1passpasspassPasses AAA — no fix needed.
Aaon black
1.1:1failfailfail
  • AA: use #735ef7 as the text (4.67:1)
  • AAA: use #9585f9 as the text (7:1)
  • AA: or shift the background to #7d7d7d (4.64:1)
  • AAA: or shift the background to #9e9e9e (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0b033f 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

#0b033f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0b033f
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 #0b033f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0b033f-a69cc4-dfac4e-271f2d-e9ecf1?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