Color

#121e30

#121e30
hex#121e30
rgbrgb(18, 30, 48)
hslhsl(216, 45%, 13%)
oklchoklch(0.234 0.039 258.3)
Closest name: Dark Knight (#151931)Relative luminance 0.0127

Tints & shades

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

Harmonies

Complementary

Open in tool →

#302412

#122d30 · #151230

#30121e · #1e3012

Split-complementary

Open in tool →

#301512 · #2d3012

#30122d · #302412 · #123015

Contrast

#121e30 as textRatioAAAA largeAAAFix
Aaon white
16.74:1passpasspassPasses AAA — no fix needed.
Aaon black
1.25:1failfailfail
  • AA: use #4a77ba as the text (4.64:1)
  • AAA: use #7698cb as the text (7.12:1)
  • AA: or shift the background to #858585 (4.54:1)
  • AAA: or shift the background to #a8a8a8 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #121e30 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#121e30 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #121e30
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 #121e30 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/121e30-9ca7c4-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