Color

#212ad4

#212ad4
hex#212ad4
rgbrgb(33, 42, 212)
hslhsl(237, 73%, 48%)
oklchoklch(0.431 0.247 268.1)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0673

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d4cb21

#2183d4 · #7121d4

#d4212a · #2ad421

Split-complementary

Open in tool →

#d47121 · #83d421

#d42183 · #d4cb21 · #21d471

Contrast

#212ad4 as textRatioAAAA largeAAAFix
Aaon white
8.95:1passpasspassPasses AAA — no fix needed.
Aaon black
2.35:1failfailfail
  • AA: use #6067e6 as the text (4.58:1)
  • AAA: use #888dec as the text (7.07:1)
  • AA: or shift the background to #b8b8b8 (4.51:1)
  • AAA: or shift the background to #e6e6e6 (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #212ad4 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

#212ad4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #212ad4
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 #212ad4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/212ad4-9f9cc4-df924e-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