What are the hex codes in the Royal Slate Blue & Space palette?

The Royal Slate Blue & Space color palette consists of Obsidian #04020C, Space #332949, Slate Blue #734CDE, Fog #D3CEE3.

How should I use the Royal Slate Blue & Space palette on a website?

Use Fog #D3CEE3 as the background, Obsidian #04020C for text, Slate Blue #734CDE for buttons and links, and Space #332949 for accents. 2 of 6 color pairs pass WCAG AA (4.5:1); the strongest is Obsidian on Fog at 13.45:1.

Which colors in Royal Slate Blue & Space have enough contrast for text?

The highest-contrast pair is #04020C on #D3CEE3 with a ratio of 13.45:1, which passes WCAG AA for normal text.

#04020CObsidian

#332949Space

#734CDESlate Blue

#D3CEE3Fog

Royal Slate Blue & Space color palette

Dark Cold Minimal Black Purple

Color codes click any value to copy

Name	HEX	RGB	HSL	OKLCH
Obsidian	`#04020C`	`rgb(4, 2, 12)`	`hsl(252, 71%, 3%)`	`oklch(10.2% 0.031 294)`
Space	`#332949`	`rgb(51, 41, 73)`	`hsl(259, 28%, 22%)`	`oklch(30.8% 0.057 297)`
Slate Blue	`#734CDE`	`rgb(115, 76, 222)`	`hsl(256, 69%, 58%)`	`oklch(54.2% 0.210 290)`
Fog	`#D3CEE3`	`rgb(211, 206, 227)`	`hsl(254, 27%, 85%)`	`oklch(86.2% 0.029 297)`

Why it works and how to use it

Royal Slate Blue & Space is a monochromatic color palette tagged dark, cold, minimal. A monochromatic set: the same hue family from Obsidian down to Fog. Saturation is moderate, which keeps it flexible for both interfaces and print. The overall temperature is cool.

It works because the lightness range is wide (3% to 85%), which gives clear hierarchy between background, content and accents. Try it for websites, presentations and branding.

Background: Fog (#D3CEE3) is the lightest color, so it belongs on large surfaces.
Text: Obsidian (#04020C) on #D3CEE3 gives 13.45:1, passing WCAG AAA.
Primary: Slate Blue (#734CDE) is the most saturated mid-tone; use it for buttons and links (3.59:1 against the background, fine for UI elements).
Accent: Space (#332949) for highlights, badges and hover states.

2 of 6 color pairs pass WCAG AA (4.5:1); the strongest is Obsidian on Fog at 13.45:1.

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

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Design faster with Royal Slate Blue & Space

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

Roles are assigned by lightness.

Color blindness simulation

#04020C

#332949

#734CDE

#D3CEE3

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

Palette card

Contrast check WCAG ratios between palette colors

Pair	Sample	Ratio	Level
`#04020C` on `#D3CEE3`	Aa	13.45:1	AAA
`#332949` on `#D3CEE3`	Aa	8.82:1	AAA
`#04020C` on `#734CDE`	Aa	3.75:1	AA large only
`#734CDE` on `#D3CEE3`	Aa	3.59:1	AA large only
`#332949` on `#734CDE`	Aa	2.46:1	Fail
`#04020C` on `#332949`	Aa	1.52:1	Fail

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