Color

#121ec4

#121ec4
hex#121ec4
rgbrgb(18, 30, 196)
hslhsl(236, 83%, 42%)
oklchoklch(0.394 0.241 266.3)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0504

Tints & shades

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

Harmonies

Complementary

Open in tool →

#c4b812

#1277c4 · #5f12c4

#c4121e · #1ec412

Split-complementary

Open in tool →

#c45f12 · #77c412

#c41277 · #c4b812 · #12c45f

Contrast

#121ec4 as textRatioAAAA largeAAAFix
Aaon white
10.46:1passpasspassPasses AAA — no fix needed.
Aaon black
2.01:1failfailfail
  • AA: use #5c66f0 as the text (4.61:1)
  • AAA: use #868df4 as the text (7.13:1)
  • AA: or shift the background to #ababab (4.55:1)
  • AAA: or shift the background to #d4d4d4 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #121ec4 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

#121ec4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #121ec4
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 #121ec4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/121ec4-9e9cc4-df8f4e-241f2d-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