Color

#040e5d

#040e5d
hex#040e5d
rgbrgb(4, 14, 93)
hslhsl(233, 92%, 19%)
oklchoklch(0.237 0.136 266)
Closest name: Interstellar Blue (#001155)Relative luminance 0.0113

Tints & shades

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

Harmonies

Complementary

Open in tool →

#5d5304

#043b5d · #26045d

#5d040e · #0e5d04

Split-complementary

Open in tool →

#5d2604 · #3b5d04

#5d043b · #5d5304 · #045d26

Contrast

#040e5d as textRatioAAAA largeAAAFix
Aaon white
17.13:1passpasspassPasses AAA — no fix needed.
Aaon black
1.23:1failfailfail
  • AA: use #5467f8 as the text (4.67:1)
  • AAA: use #808efa as the text (7.17:1)
  • 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 #040e5d 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

#040e5d reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #040e5d
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 #040e5d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/040e5d-9c9cc4-df884e-241f2d-e9eef1?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