Color

#003757

#003757
hex#003757
rgbrgb(0, 55, 87)
hslhsl(202, 100%, 17%)
oklchoklch(0.323 0.077 242.1)
Closest name: Beyond the Stars (#0a3251)Relative luminance 0.0342

Tints & shades

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

Harmonies

Complementary

Open in tool →

#572000

#00574b · #000c57

#570037 · #375700

Split-complementary

Open in tool →

#57000c · #574b00

#4b0057 · #572000 · #0c5700

Contrast

#003757 as textRatioAAAA largeAAAFix
Aaon white
12.47:1passpasspassPasses AAA — no fix needed.
Aaon black
1.68:1failfailfail
  • AA: use #007bc2 as the text (4.61:1)
  • AAA: use #009bf5 as the text (7.01:1)
  • AA: or shift the background to #9c9c9c (4.54:1)
  • AAA: or shift the background to #c2c2c2 (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 #003757 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

#003757 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #003757
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 #003757 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/003757-9cb1c4-df4e5f-1f222d-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