Color

#001538

#001538
hex#001538
rgbrgb(0, 21, 56)
hslhsl(218, 100%, 11%)
oklchoklch(0.204 0.075 257.7)
Closest name: Infinite Night (#071037)Relative luminance 0.0082

Tints & shades

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

Harmonies

Complementary

Open in tool →

#382400

#003138 · #070038

#380015 · #153800

Split-complementary

Open in tool →

#380700 · #313800

#380031 · #382400 · #003807

Contrast

#001538 as textRatioAAAA largeAAAFix
Aaon white
18.04:1passpasspassPasses AAA — no fix needed.
Aaon black
1.16:1failfailfail
  • AA: use #146aff as the text (4.54:1)
  • AAA: use #5794ff as the text (7.09:1)
  • AA: or shift the background to #808080 (4.57:1)
  • AAA: or shift the background to #a3a3a3 (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #001538 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

#001538 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #001538
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 #001538 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/001538-9ca6c4-df644e-201f2d-e9f0f1?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