#427F18#427F18

#427F18 is a mid, vivid yellow-green. Relative luminance 0.164; OKLCH L 53.5% C 0.146 H 135.9°. Best body text is #FFFFFF at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#427F18
RGB	rgb(66, 127, 24)
HSL	hsl(96, 68%, 30%)
HSV	hsv(96, 81%, 50%)
CMYK	cmyk(48%, 0%, 81.1%, 50.2%)
CIE-LAB	lab(47.50, -37.65, 45.87)
CIE-LCH	lch(47.50, 59.34, 129.38°)
OKLab	oklab(53.49% -0.105 0.1018)
OKLCH	oklch(53.49% 0.146 135.9)
XYZ	xyz(10.0008, 16.4023, 3.5030)
Luminance	0.1640 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427F18 #55187F

analogous

#767F18 #427F18 #187F22

triadic

#427F18 #18427F #7F1842

tetradic

#427F18 #18767F #55187F #7F2218

square

#427F18 #18767F #55187F #7F2218

split-complementary

#427F18 #22187F #7F1876

monochromatic

#0D1A05 #274C0E #427F18 #5DB222 #7AD938

Accessibility & contrast

On white

4.91

#427F18 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.28

#427F18 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #427F18

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427F18	#FFFFFF	#000000	##FFFFFF
##427F18	1.00	4.91	4.28	4.91
#FFFFFF	4.91	1.00	21.00	1.00
#000000	4.28	21.00	1.00	21.00
##FFFFFF	4.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#847400

Deuteranopia (green-blind)

#7C6F24

Tritanopia (blue-blind)

#3F7A6C

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #427f18;
/* rgb */ color: rgb(66, 127, 24);
/* oklch */ color: oklch(53.5% 0.146 135.9);

Tailwind

colors: {
  custom: {
    50: '#7da55e',
    500: '#427f18',
    950: '#000000',
  },
}

SCSS

$custom: #427f18;
$custom-light: #7da55e;
$custom-dark: #000000;

JSON

{
  "hex": "#427f18",
  "rgb": {
    "r": 66,
    "g": 127,
    "b": 24
  },
  "hsl": {
    "h": 95.534,
    "s": 68.212,
    "l": 29.608
  },
  "oklch": {
    "l": 0.53487,
    "c": 0.14625,
    "h": 135.9
  },
  "luminance": 0.16403
}

Semantic roles & 50–950 ramp

primary

#427F18

secondary

#843FB3

accent

#3DEBA4

background

#F7FAF5

surface

#EEF4E9

border

#C9CEC5

text

#0A0F05

muted

#7C7F79

Preview Lab

Preview with #427F18

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

Preview Lab → · Contrast checker → · Palette generator →