Color

#1a1f7f

#1a1f7f
hex#1a1f7f
rgbrgb(26, 31, 127)
hslhsl(237, 66%, 30%)
oklchoklch(0.315 0.157 270.9)
Closest name: midnightblue (#191970)Relative luminance 0.0273

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7f7a1a

#1a527f · #471a7f

#7f1a1f · #1f7f1a

Split-complementary

Open in tool →

#7f471a · #527f1a

#7f1a52 · #7f7a1a · #1a7f47

Contrast

#1a1f7f as textRatioAAAA largeAAAFix
Aaon white
13.58:1passpasspassPasses AAA — no fix needed.
Aaon black
1.55:1failfailfail
  • AA: use #6269df as the text (4.61:1)
  • AAA: use #888de7 as the text (7.01:1)
  • AA: or shift the background to #969696 (4.59:1)
  • AAA: or shift the background to #bdbdbd (7.23:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1a1f7f as the background.

Brands using this color

Fonts for this mood

#1a1f7f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1a1f7f
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 #1a1f7f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1a1f7f-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