#428C15#428C15

#428C15 is a mid, vivid yellow-green. Relative luminance 0.200; OKLCH L 57.0% C 0.164 H 137.1°. Best body text is #000000 at 4.99:1 contrast (WCAG AA passes).

Color values

HEX	#428C15
RGB	rgb(66, 140, 21)
HSL	hsl(97, 74%, 32%)
HSV	hsv(97, 85%, 55%)
CMYK	cmyk(52.9%, 0%, 85%, 45.1%)
CIE-LAB	lab(51.80, -43.10, 50.72)
CIE-LCH	lch(51.80, 66.56, 130.35°)
OKLab	oklab(57.02% -0.1198 0.1115)
OKLCH	oklch(57.02% 0.164 137.1)
XYZ	xyz(11.7598, 19.9677, 3.9438)
Luminance	0.1997 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428C15 #5F158C

analogous

#7E8C15 #428C15 #158C24

triadic

#428C15 #15428C #8C1542

tetradic

#428C15 #157E8C #5F158C #8C2415

square

#428C15 #157E8C #5F158C #8C2415

split-complementary

#428C15 #24158C #8C157E

monochromatic

#102205 #29570D #428C15 #5BC11D #79E13A

Accessibility & contrast

On white

4.21

#428C15 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.99

#428C15 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428C15

4.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428C15	#FFFFFF	#000000	##000000
##428C15	1.00	4.21	4.99	4.99
#FFFFFF	4.21	1.00	21.00	21.00
#000000	4.99	21.00	1.00	1.00
##000000	4.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#917F00

Deuteranopia (green-blind)

#877924

Tritanopia (blue-blind)

#3D8777

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #428c15;
/* rgb */ color: rgb(66, 140, 21);
/* oklch */ color: oklch(57.0% 0.164 137.1);

Tailwind

colors: {
  custom: {
    50: '#7fae5f',
    500: '#428c15',
    950: '#000000',
  },
}

SCSS

$custom: #428c15;
$custom-light: #7fae5f;
$custom-dark: #000000;

JSON

{
  "hex": "#428c15",
  "rgb": {
    "r": 66,
    "g": 140,
    "b": 21
  },
  "hsl": {
    "h": 97.311,
    "s": 73.913,
    "l": 31.569
  },
  "oklch": {
    "l": 0.57023,
    "c": 0.16368,
    "h": 137.1
  },
  "luminance": 0.19969
}

Semantic roles & 50–950 ramp

primary

#428C15

secondary

#8E3DC0

accent

#37F1AA

background

#F8FAF5

surface

#EFF4EA

border

#CACEC6

text

#0B1005

muted

#7C7F79

Preview Lab

Preview with #428C15

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

Preview Lab → · Contrast checker → · Palette generator →