#14101F
#4D4365
#8E6BFF
#EEE9FF
#DAE4F4Lavender
#8DA1C1Dusty Blue
#003F77Prussian Blue
#0E0A00Obsidian
Prussian Blue & Obsidian Hour is a vivid monochromatic color palette tagged dark, cold, minimal. A monochromatic set: the same hue family from Obsidian down to Lavender. Saturation runs high, so use the brightest color sparingly and let the others carry the surface area. Warm and cool hues are mixed, which adds depth.
Color codes click any value to copy
| Swatch | Name | HEX | RGB | HSL | OKLCH |
|---|---|---|---|---|---|
| Lavender | #DAE4F4 | rgb(218, 228, 244) | hsl(217, 54%, 91%) | oklch(91.6% 0.024 260) | |
| Dusty Blue | #8DA1C1 | rgb(141, 161, 193) | hsl(217, 30%, 65%) | oklch(70.5% 0.052 260) | |
| Prussian Blue | #003F77 | rgb(0, 63, 119) | hsl(208, 100%, 23%) | oklch(36.7% 0.111 252) | |
| Obsidian | #0E0A00 | rgb(14, 10, 0) | hsl(43, 100%, 3%) | oklch(14.6% 0.030 96) |
Why it works and how to use it
With 3 chromatic colors, Prussian Blue takes the lead while the rest support. Lightness runs from 3% to 91%. Well suited to websites, presentations and branding.
- Background: Lavender (#DAE4F4) is the lightest color, so it belongs on large surfaces.
- Text: Obsidian (#0E0A00) on #DAE4F4 gives 15.43:1, passing WCAG AAA.
- Primary: Prussian Blue (#003F77) is the most saturated mid-tone; use it for buttons and links (8.29:1 against the background, fine for UI elements).
- Accent: Dusty Blue (#8DA1C1) for highlights, badges and hover states.
3 of 6 color pairs pass WCAG AA (4.5:1); the strongest is Lavender on Obsidian at 15.43:1.
Preview on a real UI see how the palette feels in context
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Design faster with Prussian Blue & Obsidian Hour
A palette preview that turns four colors into a page, so you can judge hierarchy, contrast and mood before you commit.
Primary action SecondaryCard title
Card title
Card title
Roles are assigned by lightness.
Color blindness simulation
#DAE4F4
#8DA1C1
#003F77
#0E0A00
Color-blind check: all four colors stay distinguishable under protanopia, deuteranopia and tritanopia.
Contrast check WCAG ratios between palette colors
| Pair | Sample | Ratio | Level |
|---|---|---|---|
#DAE4F4 on #0E0A00 | Aa | 15.43:1 | AAA |
#DAE4F4 on #003F77 | Aa | 8.29:1 | AAA |
#8DA1C1 on #0E0A00 | Aa | 7.53:1 | AAA |
#8DA1C1 on #003F77 | Aa | 4.05:1 | AA large only |
#DAE4F4 on #8DA1C1 | Aa | 2.05:1 | Fail |
#003F77 on #0E0A00 | Aa | 1.86:1 | Fail |
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