Color

#04183e

#04183e
hex#04183e
rgbrgb(4, 24, 62)
hslhsl(219, 88%, 13%)
oklchoklch(0.22 0.078 260.8)
Closest name: Midnight Mirage (#001f3f)Relative luminance 0.0103

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3e2a04

#04363e · #0d043e

#3e0418 · #183e04

Split-complementary

Open in tool →

#3e0d04 · #363e04

#3e0436 · #3e2a04 · #043e0d

Contrast

#04183e as textRatioAAAA largeAAAFix
Aaon white
17.42:1passpasspassPasses AAA — no fix needed.
Aaon black
1.21:1failfailfail
  • AA: use #276ef1 as the text (4.59:1)
  • AAA: use #6195f5 as the text (7.13:1)
  • AA: or shift the background to #828282 (4.53:1)
  • AAA: or shift the background to #a6a6a6 (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 #04183e 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

#04183e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #04183e
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 #04183e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/04183e-9ca5c4-df664e-211f2d-e9f0f1?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