Color

#042f4e

#042f4e
hex#042f4e
rgbrgb(4, 47, 78)
hslhsl(205, 90%, 16%)
oklchoklch(0.296 0.072 246)
Closest name: Midnight Ocean (#0f2d4d)Relative luminance 0.0261

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4e2304

#044e47 · #040a4e

#4e042f · #2f4e04

Split-complementary

Open in tool →

#4e040a · #4e4704

#47044e · #4e2304 · #0a4e04

Contrast

#042f4e as textRatioAAAA largeAAAFix
Aaon white
13.8:1passpasspassPasses AAA — no fix needed.
Aaon black
1.52:1failfailfail
  • AA: use #0a78c7 as the text (4.52:1)
  • AAA: use #209bf3 as the text (7.04:1)
  • AA: or shift the background to #949494 (4.55:1)
  • AAA: or shift the background to #bababa (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #042f4e 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

#042f4e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #042f4e
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 #042f4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/042f4e-9cafc4-df4e58-1f212d-e9f1f0?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