What are the hex codes in the Astro Mustard & Ink palette?

The Astro Mustard & Ink color palette consists of Ink #0E1427, Dove Gray #676E78, Mustard #C5BE00, Ice #E6E7E9.

How should I use the Astro Mustard & Ink palette on a website?

Use Ice #E6E7E9 as the background, Ink #0E1427 for text, Mustard #C5BE00 for buttons and links, and Dove Gray #676E78 for accents. 2 of 6 color pairs pass WCAG AA (4.5:1); the strongest is Ink on Ice at 14.78:1.

Which colors in Astro Mustard & Ink have enough contrast for text?

The highest-contrast pair is #0E1427 on #E6E7E9 with a ratio of 14.78:1, which passes WCAG AA for normal text.

#0E1427Ink

#676E78Dove Gray

#C5BE00Mustard

#E6E7E9Ice

Astro Mustard & Ink color palette

Space Minimal Black Gray Yellow

Color codes click any value to copy

Name	HEX	RGB	HSL	OKLCH
Ink	`#0E1427`	`rgb(14, 20, 39)`	`hsl(226, 47%, 10%)`	`oklch(19.6% 0.039 269)`
Dove Gray	`#676E78`	`rgb(103, 110, 120)`	`hsl(215, 8%, 44%)`	`oklch(53.6% 0.018 257)`
Mustard	`#C5BE00`	`rgb(197, 190, 0)`	`hsl(58, 100%, 39%)`	`oklch(78.2% 0.168 107)`
Ice	`#E6E7E9`	`rgb(230, 231, 233)`	`hsl(220, 6%, 91%)`	`oklch(92.8% 0.003 265)`

Why it works and how to use it

Astro Mustard & Ink is a complementary color palette tagged space, minimal, black. Near-complementary hues (about 168° apart) make this a high-contrast, attention-grabbing combination. Saturation is moderate, which keeps it flexible for both interfaces and print. Warm and cool hues are mixed, which adds depth.

The palette holds together thanks to its complementary hue relationship and a strong light-to-dark ladder (91% down to 10% lightness). A natural fit for websites, presentations and branding.

Background: Ice (#E6E7E9) is the lightest color, so it belongs on large surfaces.
Text: Ink (#0E1427) on #E6E7E9 gives 14.78:1, passing WCAG AAA.
Primary: Mustard (#C5BE00) is the most saturated mid-tone; use it for buttons and links with a border or a darker shade for contrast.
Accent: Dove Gray (#676E78) for highlights, badges and hover states.

2 of 6 color pairs pass WCAG AA (4.5:1); the strongest is Ink on Ice at 14.78:1.

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

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Design faster with Astro Mustard & Ink

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

#0E1427

#676E78

#C5BE00

#E6E7E9

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
`#0E1427` on `#E6E7E9`	Aa	14.78:1	AAA
`#0E1427` on `#C5BE00`	Aa	9.35:1	AAA
`#676E78` on `#E6E7E9`	Aa	4.16:1	AA large only
`#0E1427` on `#676E78`	Aa	3.55:1	AA large only
`#676E78` on `#C5BE00`	Aa	2.63:1	Fail
`#C5BE00` on `#E6E7E9`	Aa	1.58:1	Fail

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