Color

#040fb4

#040fb4
hex#040fb4
rgbrgb(4, 15, 180)
hslhsl(236, 96%, 36%)
oklchoklch(0.357 0.235 264.7)
Closest name: Dark Galaxy (#0018a8)Relative luminance 0.0366

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b4a804

#0468b4 · #5004b4

#b4040f · #0fb404

Split-complementary

Open in tool →

#b45004 · #68b404

#b40468 · #b4a804 · #04b450

Contrast

#040fb4 as textRatioAAAA largeAAAFix
Aaon white
12.12:1passpasspassPasses AAA — no fix needed.
Aaon black
1.73:1failfailfail
  • AA: use #5a65fc as the text (4.7:1)
  • AAA: use #878ffd as the text (7.38:1)
  • AA: or shift the background to #9e9e9e (4.52:1)
  • AAA: or shift the background to #c7c7c7 (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #040fb4 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

#040fb4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #040fb4
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 #040fb4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/040fb4-9e9cc4-df8f4e-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