Color

#040458

#040458
hex#040458
rgbrgb(4, 4, 88)
hslhsl(240, 91%, 18%)
oklchoklch(0.216 0.138 266.6)
Closest name: Ravenclaw (#0a0555)Relative luminance 0.0082

Tints & shades

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

Harmonies

Complementary

Open in tool →

#585804

#042e58 · #2e0458

#580404 · #045804

Split-complementary

Open in tool →

#582e04 · #2e5804

#58042e · #585804 · #04582e

Contrast

#040458 as textRatioAAAA largeAAAFix
Aaon white
18.05:1passpasspassPasses AAA — no fix needed.
Aaon black
1.16:1failfailfail
  • AA: use #6363f8 as the text (4.67:1)
  • AAA: use #8a8af9 as the text (7.08:1)
  • AA: or shift the background to #808080 (4.57:1)
  • AAA: or shift the background to #a3a3a3 (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #040458 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

#040458 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #040458
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 #040458 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/040458-a19cc4-df994e-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