#428F15#428F15

#428F15 is a mid, vivid yellow-green. Relative luminance 0.209; OKLCH L 57.8% C 0.167 H 137.3°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#428F15
RGB	rgb(66, 143, 21)
HSL	hsl(98, 74%, 32%)
HSV	hsv(98, 85%, 56%)
CMYK	cmyk(53.8%, 0%, 85.3%, 43.9%)
CIE-LAB	lab(52.79, -44.27, 51.62)
CIE-LCH	lch(52.79, 68.00, 130.62°)
OKLab	oklab(57.84% -0.123 0.1134)
OKLCH	oklch(57.84% 0.167 137.3)
XYZ	xyz(12.2042, 20.8564, 4.0919)
Luminance	0.2086 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428F15 #62158F

analogous

#7F8F15 #428F15 #158F25

triadic

#428F15 #15428F #8F1542

tetradic

#428F15 #157F8F #62158F #8F2515

square

#428F15 #157F8F #62158F #8F2515

split-complementary

#428F15 #25158F #8F157F

monochromatic

#112405 #295A0D #428F15 #5BC41D #79E23C

Accessibility & contrast

On white

4.06

#428F15 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.17

#428F15 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428F15

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428F15	#FFFFFF	#000000	##000000
##428F15	1.00	4.06	5.17	5.17
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.17	21.00	1.00	1.00
##000000	5.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#948200

Deuteranopia (green-blind)

#8A7C25

Tritanopia (blue-blind)

#3D8A79

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #428f15;
/* rgb */ color: rgb(66, 143, 21);
/* oklch */ color: oklch(57.8% 0.167 137.3);

Tailwind

colors: {
  custom: {
    50: '#7fb060',
    500: '#428f15',
    950: '#000000',
  },
}

SCSS

$custom: #428f15;
$custom-light: #7fb060;
$custom-dark: #000000;

JSON

{
  "hex": "#428f15",
  "rgb": {
    "r": 66,
    "g": 143,
    "b": 21
  },
  "hsl": {
    "h": 97.869,
    "s": 74.39,
    "l": 32.157
  },
  "oklch": {
    "l": 0.5784,
    "c": 0.16726,
    "h": 137.3
  },
  "luminance": 0.20857
}

Semantic roles & 50–950 ramp

primary

#428F15

secondary

#913EC2

accent

#37F1AC

background

#F8FAF5

surface

#EFF5EA

border

#CACFC6

text

#0B1105

muted

#7C8079

Preview Lab

Preview with #428F15

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

Preview Lab → · Contrast checker → · Palette generator →