Color

#212183

#212183
hex#212183
rgbrgb(33, 33, 131)
hslhsl(240, 60%, 32%)
oklchoklch(0.327 0.158 273.4)
Closest name: Below the Surface (#0a2f7c)Relative luminance 0.0305

Tints & shades

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

Harmonies

Complementary

Open in tool →

#838321

#215283 · #522183

#832121 · #218321

Split-complementary

Open in tool →

#835221 · #528321

#832152 · #838321 · #218352

Contrast

#212183 as textRatioAAAA largeAAAFix
Aaon white
13.04:1passpasspassPasses AAA — no fix needed.
Aaon black
1.61:1failfailfail
  • AA: use #6868d9 as the text (4.57:1)
  • AAA: use #8d8de2 as the text (7.04:1)
  • AA: or shift the background to #999999 (4.58:1)
  • AAA: or shift the background to #bfbfbf (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #212183 as the background.

Brands using this color

Fonts for this mood

#212183 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #212183
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 #212183 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/212183-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