Color

#03434a

#03434a
hex#03434a
rgbrgb(3, 67, 74)
hslhsl(186, 92%, 15%)
oklchoklch(0.35 0.059 206.9)
Closest name: Cold and Dark (#154250)Relative luminance 0.0453

Tints & shades

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

Harmonies

Complementary

Open in tool →

#490a03

#03492d · #031f49

#490342 · #424903

Split-complementary

Open in tool →

#49031f · #492d03

#2d0349 · #490a03 · #1f4903

Contrast

#03434a as textRatioAAAA largeAAAFix
Aaon white
11.02:1passpasspassPasses AAA — no fix needed.
Aaon black
1.91:1failfailfail
  • AA: use #068593 as the text (4.78:1)
  • AAA: use #08a8ba as the text (7.32:1)
  • AA: or shift the background to #a6a6a6 (4.53:1)
  • AAA: or shift the background to #cfcfcf (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #03434a as the background.

Brands using this color

Fonts for this mood

#03434a reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #03434a
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 #03434a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/03434a-a2b8be-df4e86-1f262d-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