Color

#031d4f

#031d4f
hex#031d4f
rgbrgb(3, 29, 79)
hslhsl(219, 93%, 16%)
oklchoklch(0.249 0.098 261.1)
Closest name: Dark Soul (#112255)Relative luminance 0.0146

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4f3403

#03434f · #0e034f

#4f031d · #1d4f03

Split-complementary

Open in tool →

#4f0e03 · #434f03

#4f0343 · #4f3403 · #034f0e

Contrast

#031d4f as textRatioAAAA largeAAAFix
Aaon white
16.25:1passpasspassPasses AAA — no fix needed.
Aaon black
1.29:1failfailfail
  • AA: use #226cf7 as the text (4.56:1)
  • AAA: use #5d93f9 as the text (7.01:1)
  • AA: or shift the background to #878787 (4.52:1)
  • AAA: or shift the background to #ababab (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #031d4f 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

#031d4f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #031d4f
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 #031d4f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/031d4f-9ca5c4-df664e-211f2d-e9f0f1?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