Color

#040a71

#040a71
hex#040a71
rgbrgb(4, 10, 113)
hslhsl(237, 93%, 23%)
oklchoklch(0.26 0.164 265.6)
Closest name: Deep Blue (#040273)Relative luminance 0.0144

Tints & shades

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

Harmonies

Complementary

Open in tool →

#716c04

#044071 · #350471

#71040a · #0a7104

Split-complementary

Open in tool →

#713504 · #407104

#710440 · #716c04 · #047135

Contrast

#040a71 as textRatioAAAA largeAAAFix
Aaon white
16.32:1passpasspassPasses AAA — no fix needed.
Aaon black
1.29:1failfailfail
  • AA: use #5d64f9 as the text (4.66:1)
  • AAA: use #848afb as the text (7.01:1)
  • AA: or shift the background to #878787 (4.54:1)
  • AAA: or shift the background to #ababab (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #040a71 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

#040a71 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #040a71
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 #040a71 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/040a71-9f9cc4-df924e-251f2d-e9edf1?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