Color

#031f87

#031f87
hex#031f87
rgbrgb(3, 31, 135)
hslhsl(227, 96%, 27%)
oklchoklch(0.316 0.172 264.3)
Closest name: Deepsea Kraken (#082599)Relative luminance 0.0275

Tints & shades

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

Harmonies

Complementary

Open in tool →

#876a03

#036187 · #280387

#87031f · #1f8703

Split-complementary

Open in tool →

#872803 · #618703

#870361 · #876a03 · #038728

Contrast

#031f87 as textRatioAAAA largeAAAFix
Aaon white
13.55:1passpasspassPasses AAA — no fix needed.
Aaon black
1.55:1failfailfail
  • AA: use #4169fb as the text (4.64:1)
  • AAA: use #7391fc as the text (7.18:1)
  • AA: or shift the background to #969696 (4.58:1)
  • AAA: or shift the background to #bdbdbd (7.21:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #031f87 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

#031f87 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #031f87
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 #031f87 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/031f87-9ca0c4-df7a4e-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