Color

#00538f

#00538f
hex#00538f
rgbrgb(0, 83, 143)
hslhsl(205, 100%, 28%)
oklchoklch(0.434 0.12 249.1)
Closest name: Blue Chip (#1d5699)Relative luminance 0.0817

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8f3c00

#008f83 · #000c8f

#8f0053 · #538f00

Split-complementary

Open in tool →

#8f000c · #8f8300

#83008f · #8f3c00 · #0c8f00

Contrast

#00538f as textRatioAAAA largeAAAFix
Aaon white
7.97:1passpasspassPasses AAA — no fix needed.
Aaon black
2.63:1failfailfail
  • AA: use #0077cc as the text (4.51:1)
  • AAA: use #0a99ff as the text (7.01:1)
  • AA: or shift the background to #c4c4c4 (4.57:1)
  • AAA: or shift the background to #f2f2f2 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #00538f 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

#00538f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #00538f
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 #00538f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/00538f-9cafc4-df4e58-1f212d-e9f1f0?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