#428E21#428E21

#428E21 is a mid, vivid green. Relative luminance 0.206; OKLCH L 57.6% C 0.160 H 138.2°. Best body text is #000000 at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#428E21
RGB	rgb(66, 142, 33)
HSL	hsl(102, 62%, 34%)
HSV	hsv(102, 77%, 56%)
CMYK	cmyk(53.5%, 0%, 76.8%, 44.3%)
CIE-LAB	lab(52.52, -43.18, 47.62)
CIE-LCH	lch(52.52, 64.28, 132.21°)
OKLab	oklab(57.64% -0.1193 0.1068)
OKLCH	oklch(57.64% 0.16 138.2)
XYZ	xyz(12.1938, 20.6131, 4.7747)
Luminance	0.2061 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428E21 #6D218E

analogous

#798E21 #428E21 #218E37

triadic

#428E21 #21428E #8E2142

tetradic

#428E21 #21798E #6D218E #8E3721

square

#428E21 #21798E #6D218E #8E3721

split-complementary

#428E21 #37218E #8E2179

monochromatic

#142B0A #2B5C15 #428E21 #59C02D #7BD752

Accessibility & contrast

On white

4.10

#428E21 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.12

#428E21 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428E21

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428E21	#FFFFFF	#000000	##000000
##428E21	1.00	4.10	5.12	5.12
#FFFFFF	4.10	1.00	21.00	21.00
#000000	5.12	21.00	1.00	1.00
##000000	5.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#938109

Deuteranopia (green-blind)

#897B2C

Tritanopia (blue-blind)

#3C8979

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #428e21;
/* rgb */ color: rgb(66, 142, 33);
/* oklch */ color: oklch(57.6% 0.160 138.2);

Tailwind

colors: {
  custom: {
    50: '#7fb065',
    500: '#428e21',
    950: '#000000',
  },
}

SCSS

$custom: #428e21;
$custom-light: #7fb065;
$custom-dark: #000000;

JSON

{
  "hex": "#428e21",
  "rgb": {
    "r": 66,
    "g": 142,
    "b": 33
  },
  "hsl": {
    "h": 101.835,
    "s": 62.286,
    "l": 34.314
  },
  "oklch": {
    "l": 0.57639,
    "c": 0.16016,
    "h": 138.2
  },
  "luminance": 0.20614
}

Semantic roles & 50–950 ramp

primary

#428E21

secondary

#9A50BA

accent

#42E5B4

background

#F8FAF6

surface

#EFF5EB

border

#CACFC6

text

#0B1006

muted

#7C7F7A

Preview Lab

Preview with #428E21

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →