Color

#021c3b

#021c3b
hex#021c3b
rgbrgb(2, 28, 59)
hslhsl(213, 93%, 12%)
oklchoklch(0.227 0.068 254.3)
Closest name: Midnight Mirage (#001f3f)Relative luminance 0.0116

Colors that go with #021c3b

Charcoal, Crimson 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 →

#3b2102

#02383b · #05023b

#3b021c · #1c3b02

Split-complementary

Open in tool →

#3b0502 · #383b02

#3b0238 · #3b2102 · #023b05

Contrast

#021c3b as textRatioAAAA largeAAAFix
Aaon white
17.05:1passpasspassPasses AAA — no fix needed.
Aaon black
1.23:1failfailfail
  • AA: use #0971f1 as the text (4.64:1)
  • AAA: use #4998f8 as the text (7.13:1)
  • AA: or shift the background to #858585 (4.62:1)
  • AAA: or shift the background to #a6a6a6 (7:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #021c3b as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#021c3b reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #021c3b
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 #021c3b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/021c3b-9ca9c4-df584e-1f202d-e9f0f1?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