Color

#121e4e

#121e4e
hex#121e4e
rgbrgb(18, 30, 78)
hslhsl(228, 63%, 19%)
oklchoklch(0.258 0.09 268.7)
Closest name: Dark Soul (#112255)Relative luminance 0.0161

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4f4312

#123d4f · #24124f

#4f121e · #1e4f12

Split-complementary

Open in tool →

#4f2412 · #3d4f12

#4f123d · #4f4312 · #124f24

Contrast

#121e4e as textRatioAAAA largeAAAFix
Aaon white
15.89:1passpasspassPasses AAA — no fix needed.
Aaon black
1.32:1failfailfail
  • AA: use #556fd8 as the text (4.65:1)
  • AAA: use #7e92e2 as the text (7.1:1)
  • AA: or shift the background to #8a8a8a (4.6:1)
  • AAA: or shift the background to #adadad (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #121e4e 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

#121e4e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #121e4e
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 #121e4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/121e4e-9c9fc4-df7c4e-231f2d-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