#0D0221Obsidian
#5A189AIndigo
#39FF14Neon Green
#FF8C00Tangerine

Witching Hour color palette

Open in generator
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Witching Hour is a vivid dark, complementary color palette tagged halloween, dark, vibrant. Indigo and Tangerine sit nearly opposite on the color wheel, so the pairing has real energy; keep one as the accent. These are bold, punchy colors that need generous white space around them. Warm and cool hues are mixed, which adds depth.

Color codes click any value to copy

SwatchNameHEXRGBHSLOKLCH
Obsidian#0D0221rgb(13, 2, 33)hsl(261, 89%, 7%)oklch(14.2% 0.066 296)
Indigo#5A189Argb(90, 24, 154)hsl(270, 73%, 35%)oklch(39.7% 0.189 300)
Neon Green#39FF14rgb(57, 255, 20)hsl(111, 100%, 54%)oklch(87.1% 0.286 142)
Tangerine#FF8C00rgb(255, 140, 0)hsl(33, 100%, 50%)oklch(75.1% 0.179 58)

Why it works and how to use it

It works because the lightness range is wide (7% to 54%), which gives clear hierarchy between background, content and accents. Try it for seasonal campaigns and greeting cards.

  • Background: Neon Green (#39FF14) is the lightest color, so it belongs on large surfaces.
  • Text: Obsidian (#0D0221) on #39FF14 gives 14.78:1, passing WCAG AAA.
  • Primary: Tangerine (#FF8C00) is the most saturated mid-tone; use it for buttons and links with a border or a darker shade for contrast.
  • Accent: Indigo (#5A189A) for highlights, badges and hover states.

3 of 6 color pairs pass WCAG AA (4.5:1); the strongest is Obsidian on Neon Green at 14.78:1.

Preview on a real UI see how the palette feels in context

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Design faster with Witching Hour

A palette preview that turns four colors into a page, so you can judge hierarchy, contrast and mood before you commit.

Primary action Secondary
Card title
Card title
Card title
Roles are assigned by lightness.

Color blindness simulation

#0D0221
#5A189A
#39FF14
#FF8C00

Color-blind check: all four colors stay distinguishable under protanopia, deuteranopia and tritanopia.

Contrast check WCAG ratios between palette colors

PairSampleRatioLevel
#0D0221 on #39FF14Aa14.78:1AAA
#0D0221 on #FF8C00Aa8.59:1AAA
#5A189A on #39FF14Aa7.62:1AAA
#5A189A on #FF8C00Aa4.43:1AA large only
#0D0221 on #5A189AAa1.94:1Fail
#39FF14 on #FF8C00Aa1.72:1Fail

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