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#a4da21

a balanced, vivid green · cool · closest name: yellow

RGB
164, 218, 33
HSL
78°, 74%, 49%
CMYK
25, 0, 85, 15
Luminance
0.5815

Every format

HEX#a4da21
RGBrgb(164, 218, 33)
HSLhsl(78, 74%, 49%)
CMYKcmyk(25%, 0%, 85%, 15%)
LABlab(80.8 -40.6 75.2)
LCHlch(80.8 85.4 118.4)
OKLCHoklch(0.821 0.201 126.0)

Copy-ready code

/* CSS */
color: #a4da21;
background-color: #a4da21;
/* Tailwind (arbitrary) */
class="text-[#a4da21] bg-[#a4da21]"
/* SCSS */
$brand: #a4da21;
/* SwiftUI */
Color(red: 0.643, green: 0.855, blue: 0.129)
/* Android */
Color.parseColor("#a4da21")

Accessibility — WCAG contrast

Aa
#a4da21 on white: 1.66:1
AA ✗ fail · AA-large · AAA
Aa
#a4da21 on black: 12.63:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red64.3%
Green85.5%
Blue12.9%

CMYK percentages

Cyan24.8%
Magenta0.0%
Yellow84.9%
Key (black)14.5%

Color previews

#a4da21 text on a black background

contrast 12.63:1

Card sample

#a4da21 text on a white background

contrast 1.66:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #a4da21;
Background color
Panel with #a4da21 background
background-color: #a4da21;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #a4da21;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(164, 218, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(164, 218, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #a4da21;
background: linear-gradient(135deg, #a4da21, #29DA21);

Monochromatic scale

Palettes built from #a4da21

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #a4da21 in the Color Lab