Color

#043858

#043858
hex#043858
rgbrgb(4, 56, 88)
hslhsl(203, 91%, 18%)
oklchoklch(0.327 0.076 242.9)
Closest name: Beyond the Stars (#0a3251)Relative luminance 0.0356

Tints & shades

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

Harmonies

Complementary

Open in tool →

#582404

#04584e · #040e58

#580438 · #385804

Split-complementary

Open in tool →

#58040e · #584e04

#4e0458 · #582404 · #0e5804

Contrast

#043858 as textRatioAAAA largeAAAFix
Aaon white
12.27:1passpasspassPasses AAA — no fix needed.
Aaon black
1.71:1failfailfail
  • AA: use #097cc3 as the text (4.68:1)
  • AAA: use #0b9bf4 as the text (7.01:1)
  • AA: or shift the background to #9e9e9e (4.58:1)
  • AAA: or shift the background to #c4c4c4 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #043858 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

#043858 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #043858
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 #043858 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/043858-9cb0c4-df4e5d-1f222d-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