Color

#00424d

#00424d
hex#00424d
rgbrgb(0, 66, 77)
hslhsl(189, 100%, 15%)
oklchoklch(0.348 0.061 213.2)
Closest name: Cold and Dark (#154250)Relative luminance 0.0443

Colors that go with #00424d

Steel Blue, Teal 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 →

#4d0b00

#004d32 · #001b4d

#4d0041 · #414d00

Split-complementary

Open in tool →

#4d001b · #4d3200

#32004d · #4d0b00 · #1b4d00

Contrast

#00424d as textRatioAAAA largeAAAFix
Aaon white
11.13:1passpasspassPasses AAA — no fix needed.
Aaon black
1.89:1failfailfail
  • AA: use #008299 as the text (4.65:1)
  • AAA: use #00a5c2 as the text (7.16:1)
  • AA: or shift the background to #a6a6a6 (4.57:1)
  • AAA: or shift the background to #cfcfcf (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #00424d as the background.

Brands using this color

Fonts for this mood

#00424d reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #00424d
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 #00424d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/00424d-a2b7be-df4e7e-1f252d-e9f1ee?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