Dark Crypt
Also known as: Midnight Sky, Bank Blue, Rhino, Soft Steel
Part of the blue family, Dark Crypt pairs a rich base with a steady and dependable presence — ideal for finance apps and trust-driven interfaces. Because it leans cool, balancing it with a brown keeps a palette from feeling one-note. It's dark enough to use for text on white backgrounds (9.63:1, passes WCAG AA).
Dark Crypt color codes
- HEX
- #3F4551
- RGB
- rgb(63, 69, 81)
- RGBA
- rgba(63, 69, 81, 1)
- HSL
- hsl(220, 12%, 28%)
- HSV
- hsv(220, 22%, 32%)
- CMYK
- cmyk(22%, 15%, 0%, 68%)
- LAB
- lab(29.1 -0.3 -8.1)
- OKLCH
- oklch(39.0% 0.022 264.3)
Color intelligence
Displays accurately on every screen and translates well to print.
Temperature
neutral, leaning cool
subtle blue undertone in this near-neutral
Nearest standard colors
- CSS: darkslategray#2F4F4F · ΔE 13.8
- RAL 7024 — Graphite grey#474A50 · ΔE 3.6 · approximate
RAL values are widely published approximations of the physical standard. For Pantone-adjacent workflows, match by eye against a physical fan deck — Pantone's values are proprietary and device-dependent, so we don't print lookups.
Where Dark Crypt works
- Web & UI: Use it directly for text on light surfaces; it clears AA contrast without adjustment.
- Interiors: Use it where you want the eye to land — front door, built-ins, or one bold wall.
- Fashion: Works as a base layer or outerwear tone that lets brighter pieces do the talking.
- Branding: The safest brand-primary family there is; differentiate with an unexpected accent.
- Web & UI: Use it decoratively — dividers, chart series, illustration accents — and let neutrals carry the type.
- Fashion: One garment in this color carries an outfit; two starts to compete.
Copy as — every ecosystem
Tints, shades, and tones of Dark Crypt
Tints (lighter)
Shades (darker)
Color harmonies
Palettes built from Dark Crypt by rotating its hue in OKLCH space. Click any swatch to copy its hex code.
Complementary
Analogous
Triadic
Split-complementary
Tetradic
Monochromatic
Contrast & accessibility
Aa — on white
contrast 9.63:1
AA passAAA passAA large pass
Aa — on black
contrast 2.18:1
AA failAAA failAA large fail
Best text color on a Dark Crypt background: #ffffff
Palettes featuring Dark Crypt
Dark Crypt with its complement
Soft neighbors of Dark Crypt
Dark Crypt triad
Similar colors
- Inkblot#393F4B · ΔE 2.0
- Madonna#3F4250 · ΔE 2.4
- Lava Stone#3C4151 · ΔE 2.7
- Isolation#494D55 · ΔE 3.5
- Abyssal#404C57 · ΔE 3.8
- Arsenic#3B444B · ΔE 3.9
Looking for maximum contrast instead? The complement of Dark Crypt is closest to Batch Brew.
Dark Crypt FAQs
What color is Dark Crypt?
Dark Crypt is a dark blue with the hex code #3F4551. In HSL terms it has a hue of 220°, 12% saturation, and 28% lightness.
What is the hex code for Dark Crypt?
The hex code for Dark Crypt is #3F4551. In RGB it's rgb(63, 69, 81), and in CMYK it's cmyk(22%, 15%, 0%, 68%).
What colors go well with Dark Crypt?
Dark Crypt pairs naturally with brown tones from its complementary harmony. Its own tints and shades always work as a monochrome scheme.
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