Color

#021f4b

#021f4b
hex#021f4b
rgbrgb(2, 31, 75)
hslhsl(216, 95%, 15%)
oklchoklch(0.25 0.089 258.5)
Closest name: Midnight Mirage (#001f3f)Relative luminance 0.015

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4b2e02

#02434b · #09024b

#4b021f · #1f4b02

Split-complementary

Open in tool →

#4b0902 · #434b02

#4b0243 · #4b2e02 · #024b09

Contrast

#021f4b as textRatioAAAA largeAAAFix
Aaon white
16.15:1passpasspassPasses AAA — no fix needed.
Aaon black
1.3:1failfailfail
  • AA: use #106df9 as the text (4.58:1)
  • AAA: use #5195fb as the text (7.04:1)
  • AA: or shift the background to #8a8a8a (4.68:1)
  • AAA: or shift the background to #ababab (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #021f4b 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

#021f4b reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #021f4b
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 #021f4b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/021f4b-9ca7c4-df5f4e-201f2d-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