Color

#03403b

#03403b
hex#03403b
rgbrgb(3, 64, 59)
hslhsl(175, 91%, 13%)
oklchoklch(0.335 0.057 186)
Closest name: Botanical Night (#12403c)Relative luminance 0.04

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3f0308

#033f1c · #03263f

#3a033f · #3f3a03

Split-complementary

Open in tool →

#3f0326 · #3f1c03

#1c033f · #3f0308 · #263f03

Contrast

#03403b as textRatioAAAA largeAAAFix
Aaon white
11.66:1passpasspassPasses AAA — no fix needed.
Aaon black
1.8:1failfailfail
  • AA: use #068479 as the text (4.58:1)
  • AAA: use #08aa9d as the text (7.25:1)
  • AA: or shift the background to #a1a1a1 (4.51:1)
  • AAA: or shift the background to #c9c9c9 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #03403b as the background.

Brands using this color

Fonts for this mood

#03403b reads as vivid, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #03403b
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 #03403b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/03403b-a2bdbe-d4599f-1f282d-e9f1ed?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