Color

#1d033a

#1d033a
hex#1d033a
rgbrgb(29, 3, 58)
hslhsl(268, 90%, 12%)
oklchoklch(0.198 0.097 298.8)
Closest name: Quiet Abyss (#160435)Relative luminance 0.0063

Colors that go with #1d033a

Charcoal, Royal Blue and Sea Green 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 →

#203a03

#03053a · #38033a

#3a1d03 · #033a1d

Split-complementary

Open in tool →

#3a3803 · #053a03

#3a0305 · #203a03 · #033a38

Contrast

#1d033a as textRatioAAAA largeAAAFix
Aaon white
18.64:1passpasspassPasses AAA — no fix needed.
Aaon black
1.13:1failfailfail
  • AA: use #9847f5 as the text (4.55:1)
  • AAA: use #b67cf8 as the text (7.23:1)
  • AA: or shift the background to #7d7d7d (4.53:1)
  • AAA: or shift the background to #a1a1a1 (7.22:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1d033a 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

#1d033a reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1d033a
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 #1d033a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1d033a-b39cc4-dfdc4e-2c1f2d-e9eaf1?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