Color

#031a40

#031a40
hex#031a40
rgbrgb(3, 26, 64)
hslhsl(217, 91%, 13%)
oklchoklch(0.227 0.079 259.2)
Closest name: Midnight Mirage (#001f3f)Relative luminance 0.0113

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3f2803

#03383f · #0a033f

#3f031a · #1a3f03

Split-complementary

Open in tool →

#3f0a03 · #383f03

#3f0338 · #3f2803 · #033f0a

Contrast

#031a40 as textRatioAAAA largeAAAFix
Aaon white
17.13:1passpasspassPasses AAA — no fix needed.
Aaon black
1.23:1failfailfail
  • AA: use #1a6ef4 as the text (4.58:1)
  • AAA: use #5996f7 as the text (7.13:1)
  • AA: or shift the background to #858585 (4.64:1)
  • AAA: or shift the background to #a6a6a6 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #031a40 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

#031a40 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #031a40
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 #031a40 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/031a40-9ca7c4-df624e-201f2d-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