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#17df21

a balanced, electric green · cool · closest name: lime

RGB
23, 223, 33
HSL
123°, 81%, 48%
CMYK
90, 0, 85, 13
Luminance
0.5307

Every format

HEX#17df21
RGBrgb(23, 223, 33)
HSLhsl(123, 81%, 48%)
CMYKcmyk(90%, 0%, 85%, 13%)
LABlab(77.9 -76.1 70.9)
LCHlch(77.9 104.0 137.0)
OKLCHoklch(0.785 0.259 142.9)

Copy-ready code

/* CSS */
color: #17df21;
background-color: #17df21;
/* Tailwind (arbitrary) */
class="text-[#17df21] bg-[#17df21]"
/* SCSS */
$brand: #17df21;
/* SwiftUI */
Color(red: 0.090, green: 0.875, blue: 0.129)
/* Android */
Color.parseColor("#17df21")

Accessibility — WCAG contrast

Aa
#17df21 on white: 1.81:1
AA ✗ fail · AA-large · AAA
Aa
#17df21 on black: 11.61:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red9.0%
Green87.5%
Blue12.9%

CMYK percentages

Cyan89.7%
Magenta0.0%
Yellow85.2%
Key (black)12.5%

Color previews

#17df21 text on a black background

contrast 11.61:1

Card sample

#17df21 text on a white background

contrast 1.81:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #17df21;
Background color
Panel with #17df21 background
background-color: #17df21;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #17df21;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(23, 223, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(23, 223, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #17df21;
background: linear-gradient(135deg, #17df21, #17DFA6);

Monochromatic scale

Palettes built from #17df21

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #17df21 in the Color Lab