Color

#030ed3

#030ed3
hex#030ed3
rgbrgb(3, 14, 211)
hslhsl(237, 97%, 42%)
oklchoklch(0.399 0.267 264.4)
Closest name: mediumblue (#0000cd)Relative luminance 0.0504

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d3c903

#0375d3 · #6103d3

#d3030e · #0ed303

Split-complementary

Open in tool →

#d36103 · #75d303

#d30375 · #d3c903 · #03d361

Contrast

#030ed3 as textRatioAAAA largeAAAFix
Aaon white
10.46:1passpasspassPasses AAA — no fix needed.
Aaon black
2.01:1failfailfail
  • AA: use #5961fc as the text (4.54:1)
  • AAA: use #868cfd as the text (7.18:1)
  • AA: or shift the background to #ababab (4.56:1)
  • AAA: or shift the background to #d4d4d4 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #030ed3 as the background.

Brands using this color

Fonts for this mood

#030ed3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #030ed3
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 #030ed3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/030ed3-9f9cc4-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