Color

#04819a

#04819a
hex#04819a
rgbrgb(4, 129, 154)
hslhsl(190, 95%, 31%)
oklchoklch(0.557 0.099 217.9)
Closest name: Ahoy! Blue (#0082a1)Relative luminance 0.1806

Colors that go with #04819a

Charcoal, Crimson and Rust lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9a1d04

#049a68 · #04369a

#9a0481 · #819a04

Split-complementary

Open in tool →

#9a0436 · #9a6804

#68049a · #9a1d04 · #369a04

Contrast

#04819a as textRatioAAAA largeAAAFix
Aaon white
4.55:1passpassfail
  • AAA: use #036072 as the text (7.19:1)
Aaon black
4.61:1passpassfail
  • AAA: use #05a7c7 as the text (7.36:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #04819a 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

#04819a reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #04819a
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #04819a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/04819a-a2b6be-df4e7c-1f252d-e9f1ef?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