Arsenic
Also known as: Cool Operator’s Overalls, Winter Way, Chimney Smoke, Nightshade
Expect cool and professional associations from Arsenic — a rich blue well suited to corporate branding and SaaS products. Set it against a brown accent when you want the combination to pop. On white it reads clearly at 9.93:1 contrast — safe for body text under WCAG AA.
Arsenic color codes
- HEX
- #3B444B
- RGB
- rgb(59, 68, 75)
- RGBA
- rgba(59, 68, 75, 1)
- HSL
- hsl(206, 12%, 26%)
- HSV
- hsv(206, 21%, 29%)
- CMYK
- cmyk(21%, 9%, 0%, 71%)
- LAB
- lab(28.2 -2.5 -5.5)
- OKLCH
- oklch(38.1% 0.017 241.4)
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 10.7
- RAL 7016 — Anthracite grey#373F43 · ΔE 2.4 · 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 Arsenic 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 Arsenic
Tints (lighter)
Shades (darker)
Color harmonies
Palettes built from Arsenic 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 9.93:1
AA passAAA passAA large pass
Aa — on black
contrast 2.11:1
AA failAAA failAA large fail
Best text color on a Arsenic background: #ffffff
Palettes featuring Arsenic
Arsenic with its complement
Soft neighbors of Arsenic
Arsenic triad
Similar colors
- Lights Out#3D474B · ΔE 2.3
- Stargazing#414549 · ΔE 2.6
- Dead Forest#434B4F · ΔE 2.9
- Abyssal#404C57 · ΔE 3.3
- Tuna#46494E · ΔE 3.6
- Witchcraft#474C50 · ΔE 3.6
Looking for maximum contrast instead? The complement of Arsenic is closest to Batch Brew.
Arsenic FAQs
What color is Arsenic?
Arsenic is a dark blue with the hex code #3B444B. In HSL terms it has a hue of 206°, 12% saturation, and 26% lightness.
What is the hex code for Arsenic?
The hex code for Arsenic is #3B444B. In RGB it's rgb(59, 68, 75), and in CMYK it's cmyk(21%, 9%, 0%, 71%).
What colors go well with Arsenic?
Arsenic pairs naturally with brown tones from its complementary harmony. Its own tints and shades always work as a monochrome scheme.
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