Color

#212178

#212178
hex#212178
rgbrgb(33, 33, 120)
hslhsl(240, 57%, 30%)
oklchoklch(0.315 0.143 274.5)
Closest name: midnightblue (#191970)Relative luminance 0.0277

Tints & shades

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

Harmonies

Complementary

Open in tool →

#787821

#214d78 · #4d2178

#782121 · #217821

Split-complementary

Open in tool →

#784d21 · #4d7821

#78214d · #787821 · #21784d

Contrast

#212178 as textRatioAAAA largeAAAFix
Aaon white
13.52:1passpasspassPasses AAA — no fix needed.
Aaon black
1.55:1failfailfail
  • AA: use #6b6bd6 as the text (4.7:1)
  • AAA: use #8f8fe0 as the text (7.17:1)
  • AA: or shift the background to #969696 (4.57:1)
  • AAA: or shift the background to #bdbdbd (7.2:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #212178 as the background.

Brands using this color

Fonts for this mood

#212178 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #212178
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 #212178 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/212178-a19cc4-df994e-251f2d-e9edf1?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