Becquerel
Also known as: Nuclear Meltdown , Furious Frog , Satin Lime , Vivid Green
With its cool undertone, Becquerel (#4BEC13) comes across as calm and balanced. Designers reach for it in eco packaging and finance apps. Set it against a purple accent when you want the combination to pop. For accessible text, use it on black or near-black backgrounds (13.31:1, passes WCAG AA) rather than white.
Reference
Becquerel color codes
- HEX
- #4BEC13
- RGB
- rgb(75, 236, 19)
- RGBA
- rgba(75, 236, 19, 1)
- HSL
- hsl(105, 85%, 50%)
- HSV
- hsv(105, 92%, 93%)
- CMYK
- cmyk(68%, 0%, 92%, 7%)
- LAB
- lab(82.8 -67.5 75.8)
- OKLCH
- oklch(82.6% 0.263 140.3)
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: lime #00FF00 · ΔE 4.2
- RAL 6037: Pure green #25E712 · ΔE 2.0 · 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 Becquerel 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 Becquerel
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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 Becquerel 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 1.58:1
AA fail AAA fail AA large fail
Aa on black
contrast 13.31:1
AA pass AAA pass AA large pass
Best text color on a Becquerel background: #000000
Palettes
Palettes featuring Becquerel
Becquerel with its complement
Soft neighbors of Becquerel
Becquerel triad
Explore
Similar colors
- Satin Lime #33EE00 · ΔE 1.0
- Plutonium #35FA00 · ΔE 3.0
- McNuke #33FF11 · ΔE 4.0
- Poisonous #55FF11 · ΔE 4.1
- Green #00FF00 · ΔE 4.2
- So Sour #00FF11 · ΔE 4.2
Looking for maximum contrast instead? The complement of Becquerel is closest to Jigglypuff .
FAQ
Becquerel FAQs
What color is Becquerel?
Becquerel is a medium green with the hex code #4BEC13. In HSL terms it has a hue of 105°, 85% saturation, and 50% lightness.
What is the hex code for Becquerel?
The hex code for Becquerel is #4BEC13. In RGB it's rgb(75, 236, 19), and in CMYK it's cmyk(68%, 0%, 92%, 7%).
What colors go well with Becquerel?
Becquerel 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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