Color

#121a4e

#121a4e
hex#121a4e
rgbrgb(18, 26, 78)
hslhsl(232, 63%, 19%)
oklchoklch(0.249 0.096 271)
Closest name: Dark Soul (#112255)Relative luminance 0.0142

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4f4712

#12394f · #28124f

#4f121a · #1a4f12

Split-complementary

Open in tool →

#4f2812 · #394f12

#4f1239 · #4f4712 · #124f28

Contrast

#121a4e as textRatioAAAA largeAAAFix
Aaon white
16.36:1passpasspassPasses AAA — no fix needed.
Aaon black
1.28:1failfailfail
  • AA: use #5d6eda as the text (4.71:1)
  • AAA: use #8693e4 as the text (7.31:1)
  • AA: or shift the background to #878787 (4.55:1)
  • AAA: or shift the background to #ababab (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #121a4e 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

#121a4e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #121a4e
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 #121a4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/121a4e-9c9dc4-df864e-231f2d-e9eef1?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