Color

#040f86

#040f86
hex#040f86
rgbrgb(4, 15, 134)
hslhsl(235, 94%, 27%)
oklchoklch(0.294 0.185 265.2)
Closest name: darkblue (#00008b)Relative luminance 0.0209

Tints & shades

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

Harmonies

Complementary

Open in tool →

#867b04

#045086 · #3a0486

#86040f · #0f8604

Split-complementary

Open in tool →

#863a04 · #508604

#860450 · #867b04 · #04863a

Contrast

#040f86 as textRatioAAAA largeAAAFix
Aaon white
14.81:1passpasspassPasses AAA — no fix needed.
Aaon black
1.42:1failfailfail
  • AA: use #5764fa as the text (4.61:1)
  • AAA: use #838dfb as the text (7.17:1)
  • AA: or shift the background to #8f8f8f (4.58:1)
  • AAA: or shift the background to #b3b3b3 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #040f86 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

#040f86 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #040f86
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 #040f86 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/040f86-9e9cc4-df8d4e-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