Color

#02178d

#02178d
hex#02178d
rgbrgb(2, 23, 141)
hslhsl(231, 97%, 28%)
oklchoklch(0.312 0.187 264.6)
Closest name: Everlasting Night (#000099)Relative luminance 0.0255

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8d7802

#025c8d · #33028d

#8d0217 · #178d02

Split-complementary

Open in tool →

#8d3302 · #5c8d02

#8d025c · #8d7802 · #028d33

Contrast

#02178d as textRatioAAAA largeAAAFix
Aaon white
13.91:1passpasspassPasses AAA — no fix needed.
Aaon black
1.51:1failfailfail
  • AA: use #4a65fc as the text (4.56:1)
  • AAA: use #7c90fd as the text (7.26:1)
  • AA: or shift the background to #949494 (4.59:1)
  • AAA: or shift the background to #b8b8b8 (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #02178d 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

#02178d reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #02178d
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 #02178d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/02178d-9c9ec4-df834e-231f2d-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