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#d5ef21

a balanced, electric yellow · cool · closest name: yellow

RGB
213, 239, 33
HSL
68°, 87%, 53%
CMYK
11, 0, 86, 6
Luminance
0.7599

Every format

HEX#d5ef21
RGBrgb(213, 239, 33)
HSLhsl(68, 87%, 53%)
CMYKcmyk(11%, 0%, 86%, 6%)
LABlab(89.8 -30.8 84.0)
LCHlch(89.8 89.4 110.1)
OKLCHoklch(0.902 0.203 117.6)

Copy-ready code

/* CSS */
color: #d5ef21;
background-color: #d5ef21;
/* Tailwind (arbitrary) */
class="text-[#d5ef21] bg-[#d5ef21]"
/* SCSS */
$brand: #d5ef21;
/* SwiftUI */
Color(red: 0.835, green: 0.937, blue: 0.129)
/* Android */
Color.parseColor("#d5ef21")

Accessibility — WCAG contrast

Aa
#d5ef21 on white: 1.30:1
AA ✗ fail · AA-large · AAA
Aa
#d5ef21 on black: 16.20:1
AA ✓ pass · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red83.5%
Green93.7%
Blue12.9%

CMYK percentages

Cyan10.9%
Magenta0.0%
Yellow86.2%
Key (black)6.3%

Color previews

#d5ef21 text on a black background

contrast 16.20:1

Card sample

#d5ef21 text on a white background

contrast 1.30:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #d5ef21;
Background color
Panel with #d5ef21 background
background-color: #d5ef21;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #d5ef21;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(213, 239, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(213, 239, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #d5ef21;
background: linear-gradient(135deg, #d5ef21, #4BEF21);

Monochromatic scale

Palettes built from #d5ef21

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #d5ef21 in the Color Lab