Color

#031c63

#031c63
hex#031c63
rgbrgb(3, 28, 99)
hslhsl(224, 94%, 20%)
oklchoklch(0.268 0.128 263.6)
Closest name: Black Sea Night (#052462)Relative luminance 0.0175

Tints & shades

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

Harmonies

Complementary

Open in tool →

#634903

#034d63 · #190363

#63031d · #1d6303

Split-complementary

Open in tool →

#631903 · #4d6303

#63034d · #634903 · #036319

Contrast

#031c63 as textRatioAAAA largeAAAFix
Aaon white
15.55:1passpasspassPasses AAA — no fix needed.
Aaon black
1.35:1failfailfail
  • AA: use #3469f9 as the text (4.53:1)
  • AAA: use #6b91fa as the text (7.06:1)
  • AA: or shift the background to #8a8a8a (4.51:1)
  • AAA: or shift the background to #b0b0b0 (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 #031c63 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

#031c63 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #031c63
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 #031c63 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/031c63-9ca2c4-df724e-221f2d-e9eff1?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