Color

#101e37

#101e37
hex#101e37
rgbrgb(16, 30, 55)
hslhsl(218, 55%, 14%)
oklchoklch(0.237 0.052 261.2)
Closest name: Nightwalker (#161d3b)Relative luminance 0.0131

Tints & shades

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

Harmonies

Complementary

Open in tool →

#372910

#103237 · #151037

#37101e · #1e3710

Split-complementary

Open in tool →

#371510 · #323710

#371032 · #372910 · #103715

Contrast

#101e37 as textRatioAAAA largeAAAFix
Aaon white
16.63:1passpasspassPasses AAA — no fix needed.
Aaon black
1.26:1failfailfail
  • AA: use #4173c8 as the text (4.51:1)
  • AAA: use #7196d6 as the text (7.04:1)
  • AA: or shift the background to #858585 (4.51:1)
  • AAA: or shift the background to #ababab (7.24:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #101e37 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#101e37 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #101e37
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 #101e37 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/101e37-9ca6c4-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