Color

#012a3d

#012a3d
hex#012a3d
rgbrgb(1, 42, 61)
hslhsl(199, 97%, 12%)
oklchoklch(0.269 0.056 234.3)
Closest name: Black Box (#0f282f)Relative luminance 0.02

Colors that go with #012a3d

Charcoal, Crimson and Royal Blue 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 →

#3c1401

#013c31 · #010c3c

#3c0129 · #293c01

Split-complementary

Open in tool →

#3c010c · #3c3101

#31013c · #3c1401 · #0c3c01

Contrast

#012a3d as textRatioAAAA largeAAAFix
Aaon white
15:1passpasspassPasses AAA — no fix needed.
Aaon black
1.4:1failfailfail
  • AA: use #037cb5 as the text (4.55:1)
  • AAA: use #049fe7 as the text (7.12:1)
  • AA: or shift the background to #8f8f8f (4.64:1)
  • AAA: or shift the background to #b3b3b3 (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 #012a3d 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

#012a3d reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #012a3d
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 #012a3d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/012a3d-9cb3c4-df4e66-1f232d-e9f1f0?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