Radioactive
Also known as: Lasting Lime , Bright Lime , Lethal Lime , Acid Green
Radioactive sits on the warm side of the spectrum: a vivid green that feels calm and balanced. Try it in finance apps and outdoor gear. Because it leans warm, balancing it with a purple keeps a palette from feeling one-note. For accessible text, use it on black or near-black backgrounds (16.24:1, passes WCAG AA) rather than white.
Reference
Radioactive color codes
- HEX
- #89FE05
- RGB
- rgb(137, 254, 5)
- RGBA
- rgba(137, 254, 5, 1)
- HSL
- hsl(88, 99%, 51%)
- HSV
- hsv(88, 98%, 100%)
- CMYK
- cmyk(46%, 0%, 98%, 0%)
- LAB
- lab(90.1 -58.3 83.8)
- OKLCH
- oklch(89.2% 0.259 134.8)
Analysis
Color intelligence
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Gamut
The full range of colors a device or space can show. sRGB is the common screen gamut; Display P3 is wider. A color outside a gamut cannot be shown accurately there and must be mapped inward.Full glossary entry →Displays accurately on every screen. Vivid colors like this typically lose some intensity in CMYK print. Request a physical proof for brand-critical work.
Temperature
Undertone
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neutral, leaning warm
Nearest standard colors
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Delta E (ΔE)
A measure of how different two colors look. Below 1 the difference is invisible to almost everyone; below 2.3 most people can't tell them apart; above 10 they are clearly different colors. We use CIEDE2000, the modern standard.Full glossary entry →
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Delta E (ΔE)
A measure of how different two colors look. Below 1 the difference is invisible to almost everyone; below 2.3 most people can't tell them apart; above 10 they are clearly different colors. We use CIEDE2000, the modern standard.Full glossary entry →- CSS: chartreuse #7FFF00 · ΔE 0.9
- RAL 6038: Luminous green #00F700 · ΔE 6.5 · 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 Radioactive works
- Web & UI: Reads as an interactive accent: fills, hovers, focus rings. Keep body text in a darker neutral.
- Interiors: Use it where you want the eye to land: a front door, built-ins, or one bold wall.
- Fashion: One garment in this color carries an outfit; two starts to compete.
- Branding: A brand green signals freshness; deepen it for finance, brighten it for eco-consumer products.
- Web & UI: Use it decoratively for dividers, chart series, and illustration accents, and let neutrals carry the type.
- Branding: Best in a brand's supporting palette: packaging interiors, patterns, campaign accents.
Copy as: every ecosystem
Variations
Tints, shades, and tones of Radioactive
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Tint
A color mixed with white, which raises its lightness. Pink is a tint of red. Tints feel softer and more open than the base color.Full glossary entry →
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Tint
A color mixed with white, which raises its lightness. Pink is a tint of red. Tints feel softer and more open than the base color.Full glossary entry →Tints (lighter)
Shades (darker)
Harmonies
Color harmonies
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Complementary colors
Two colors opposite each other on the wheel. They create the strongest contrast and make each other look more intense, so they work best used unevenly.Full glossary entry →
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Complementary colors
Two colors opposite each other on the wheel. They create the strongest contrast and make each other look more intense, so they work best used unevenly.Full glossary entry →Palettes built from Radioactive by rotating its hue in OKLCH space. Click any swatch to copy its hex code.
Complementary
Analogous
Triadic
Split-complementary
Tetradic
Monochromatic
Accessibility
Contrast & accessibility
Aa on white
contrast 1.29:1
AA fail AAA fail AA large fail
Aa on black
contrast 16.24:1
AA pass AAA pass AA large pass
Best text color on a Radioactive background: #000000
Palettes
Palettes featuring Radioactive
Radioactive with its complement
Soft neighbors of Radioactive
Radioactive triad
Explore
Similar colors
- Acid Green #8FFE09 · ΔE 0.6
- Loud Lime #88FF22 · ΔE 0.8
- Mochito #8EFA00 · ΔE 1.0
- Lime #AAFF32 · ΔE 3.2
- Spring Bud #A7FC00 · ΔE 3.4
- Poisonous #55FF11 · ΔE 4.0
Looking for maximum contrast instead? The complement of Radioactive is closest to Beefy Pink .
FAQ
Radioactive FAQs
What color is Radioactive?
Radioactive is a medium green with the hex code #89FE05. In HSL terms it has a hue of 88°, 99% saturation, and 51% lightness.
What is the hex code for Radioactive?
The hex code for Radioactive is #89FE05. In RGB it's rgb(137, 254, 5), and in CMYK it's cmyk(46%, 0%, 98%, 0%).
What colors go well with Radioactive?
Radioactive pairs naturally with purple tones from its complementary harmony, and with blue accents from its split-complementary palette. Its own tints and shades always work as a monochrome scheme.
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