Color

#021b4f

#021b4f
hex#021b4f
rgbrgb(2, 27, 79)
hslhsl(221, 95%, 16%)
oklchoklch(0.244 0.101 261.5)
Closest name: Interstellar Blue (#001155)Relative luminance 0.0136

Tints & shades

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

Harmonies

Complementary

Open in tool →

#503702

#024150 · #100250

#50021b · #1b5002

Split-complementary

Open in tool →

#501002 · #415002

#500241 · #503702 · #025010

Contrast

#021b4f as textRatioAAAA largeAAAFix
Aaon white
16.51:1passpasspassPasses AAA — no fix needed.
Aaon black
1.27:1failfailfail
  • AA: use #296bfa as the text (4.58:1)
  • AAA: use #6594fb as the text (7.18:1)
  • AA: or shift the background to #878787 (4.59:1)
  • AAA: or shift the background to #ababab (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #021b4f 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

#021b4f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #021b4f
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 #021b4f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/021b4f-9ca4c4-df6b4e-211f2d-e9eff1?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