Color

#021803

#021803
hex#021803
rgbrgb(2, 24, 3)
hslhsl(123, 85%, 5%)
oklchoklch(0.184 0.053 144.2)
Closest name: Cosmic Bit Flip (#001000)Relative luminance 0.0067

Colors that go with #021803

Blue Violet, Charcoal and Crimson 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 →

#180217

#0c1802 · #02180e

#030218 · #180302

Split-complementary

Open in tool →

#0e0218 · #18020c

#020c18 · #180217 · #180e02

Contrast

#021803 as textRatioAAAA largeAAAFix
Aaon white
18.51:1passpasspassPasses AAA — no fix needed.
Aaon black
1.13:1failfailfail
  • AA: use #0b8911 as the text (4.6:1)
  • AAA: use #0eaf16 as the text (7.16:1)
  • AA: or shift the background to #808080 (4.69:1)
  • AAA: or shift the background to #a1a1a1 (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #021803 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

#021803 reads as vivid, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #021803
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 #021803 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/021803-a2bea6-a04edf-1f2d26-edf1e9?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