Color

#003151

#003151
hex#003151
rgbrgb(0, 49, 81)
hslhsl(204, 100%, 16%)
oklchoklch(0.302 0.075 244.4)
Closest name: Beyond the Stars (#0a3251)Relative luminance 0.0279

Tints & shades

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

Harmonies

Complementary

Open in tool →

#522100

#005249 · #000852

#520031 · #315200

Split-complementary

Open in tool →

#520008 · #524900

#490052 · #522100 · #085200

Contrast

#003151 as textRatioAAAA largeAAAFix
Aaon white
13.48:1passpasspassPasses AAA — no fix needed.
Aaon black
1.56:1failfailfail
  • AA: use #007acc as the text (4.66:1)
  • AAA: use #0099ff as the text (7:1)
  • AA: or shift the background to #969696 (4.56:1)
  • AAA: or shift the background to #bdbdbd (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #003151 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

#003151 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #003151
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 #003151 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/003151-9cafc4-df4e5a-1f222d-e9f1f0?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