Color

#031b72

#031b72
hex#031b72
rgbrgb(3, 27, 114)
hslhsl(227, 95%, 23%)
oklchoklch(0.284 0.15 264.4)
Closest name: midnightblue (#191970)Relative luminance 0.0202

Tints & shades

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

Harmonies

Complementary

Open in tool →

#725a03

#035372 · #230372

#72031b · #1b7203

Split-complementary

Open in tool →

#722303 · #537203

#720353 · #725a03 · #037223

Contrast

#031b72 as textRatioAAAA largeAAAFix
Aaon white
14.96:1passpasspassPasses AAA — no fix needed.
Aaon black
1.4:1failfailfail
  • AA: use #426afa as the text (4.67:1)
  • AAA: use #7491fb as the text (7.19:1)
  • AA: or shift the background to #8f8f8f (4.63:1)
  • AAA: or shift the background to #b3b3b3 (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #031b72 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

#031b72 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #031b72
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 #031b72 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/031b72-9ca0c4-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