Color

#031b45

#031b45
hex#031b45
rgbrgb(3, 27, 69)
hslhsl(218, 92%, 14%)
oklchoklch(0.234 0.085 260)
Closest name: Midnight Mirage (#001f3f)Relative luminance 0.0123

Tints & shades

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

Harmonies

Complementary

Open in tool →

#452c03

#033c45 · #0c0345

#45031b · #1b4503

Split-complementary

Open in tool →

#450c03 · #3c4503

#45033c · #452c03 · #03450c

Contrast

#031b45 as textRatioAAAA largeAAAFix
Aaon white
16.85:1passpasspassPasses AAA — no fix needed.
Aaon black
1.25:1failfailfail
  • AA: use #1e6df6 as the text (4.57:1)
  • AAA: use #5d96f8 as the text (7.18:1)
  • AA: or shift the background to #858585 (4.57:1)
  • AAA: or shift the background to #a8a8a8 (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 #031b45 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

#031b45 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #031b45
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 #031b45 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/031b45-9ca6c4-df644e-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