Color

#03215e

#03215e
hex#03215e
rgbrgb(3, 33, 94)
hslhsl(220, 94%, 19%)
oklchoklch(0.274 0.115 261.8)
Closest name: Black Sea Night (#052462)Relative luminance 0.0192

Tints & shades

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

Harmonies

Complementary

Open in tool →

#5e4003

#034f5e · #12035e

#5e0321 · #215e03

Split-complementary

Open in tool →

#5e1203 · #4f5e03

#5e034f · #5e4003 · #035e12

Contrast

#03215e as textRatioAAAA largeAAAFix
Aaon white
15.18:1passpasspassPasses AAA — no fix needed.
Aaon black
1.38:1failfailfail
  • AA: use #256cf8 as the text (4.58:1)
  • AAA: use #6194fa as the text (7.12:1)
  • AA: or shift the background to #8c8c8c (4.52:1)
  • AAA: or shift the background to #b0b0b0 (7:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #03215e 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

#03215e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #03215e
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 #03215e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/03215e-9ca5c4-df694e-211f2d-e9f0f1?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