Color

#0500a3

#0500a3
hex#0500a3
rgbrgb(5, 0, 163)
hslhsl(242, 100%, 32%)
oklchoklch(0.325 0.223 264.9)
Closest name: Cobalt (#030aa7)Relative luminance 0.0268

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9ea300

#004ca3 · #5700a3

#a30500 · #00a305

Split-complementary

Open in tool →

#a35700 · #4ca300

#a3004c · #9ea300 · #00a357

Contrast

#0500a3 as textRatioAAAA largeAAAFix
Aaon white
13.68:1passpasspassPasses AAA — no fix needed.
Aaon black
1.54:1failfailfail
  • AA: use #6661ff as the text (4.72:1)
  • AAA: use #8e8aff as the text (7.23:1)
  • AA: or shift the background to #949494 (4.51:1)
  • AAA: or shift the background to #bababa (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0500a3 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

#0500a3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0500a3
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 #0500a3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0500a3-a29cc4-df9e4e-261f2d-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