#A3D840#A3D840

#A3D840 is a light, vivid yellow-green. Relative luminance 0.573; OKLCH L 81.7% C 0.185 H 127.0°. Best body text is #000000 at 12.45:1 contrast (WCAG AA passes).

Color values

HEX	#A3D840
RGB	rgb(163, 216, 64)
HSL	hsl(81, 66%, 55%)
HSV	hsv(81, 70%, 85%)
CMYK	cmyk(24.5%, 0%, 70.4%, 15.3%)
CIE-LAB	lab(80.33, -38.70, 65.71)
CIE-LCH	lch(80.33, 76.26, 120.50°)
OKLab	oklab(81.73% -0.111 0.1475)
OKLCH	oklch(81.73% 0.185 127)
XYZ	xyz(40.5856, 57.2677, 13.7650)
Luminance	0.5727 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A3D840 #7540D8

analogous

#D8C140 #A3D840 #57D840

triadic

#A3D840 #40A3D8 #D840A3

tetradic

#A3D840 #40D8C1 #7540D8 #D84057

square

#A3D840 #40D8C1 #7540D8 #D84057

split-complementary

#A3D840 #4057D8 #C140D8

monochromatic

#5F831B #83B625 #A3D840 #BBE273 #D4EDA6

Accessibility & contrast

On white

1.69

#A3D840 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.45

#A3D840 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #A3D840

12.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A3D840	#FFFFFF	#000000	##000000
##A3D840	1.00	1.69	12.45	12.45
#FFFFFF	1.69	1.00	21.00	21.00
#000000	12.45	21.00	1.00	1.00
##000000	12.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E3C926

Deuteranopia (green-blind)

#DCC64D

Tritanopia (blue-blind)

#A9CEBA

Achromatopsia (no color)

#C7C7C7

Design tokens & code

CSS

--color: #a3d840;
/* rgb */ color: rgb(163, 216, 64);
/* oklch */ color: oklch(81.7% 0.185 127.0);

Tailwind

colors: {
  custom: {
    50: '#c2e47e',
    500: '#a3d840',
    950: '#000000',
  },
}

SCSS

$custom: #a3d840;
$custom-light: #c2e47e;
$custom-dark: #000000;

JSON

{
  "hex": "#a3d840",
  "rgb": {
    "r": 163,
    "g": 216,
    "b": 64
  },
  "hsl": {
    "h": 80.921,
    "s": 66.087,
    "l": 54.902
  },
  "oklch": {
    "l": 0.81729,
    "c": 0.18465,
    "h": 127
  },
  "luminance": 0.57268
}

Semantic roles & 50–950 ramp

primary

#A3D840

secondary

#51338A

accent

#3FE97A

background

#FDFEFB

surface

#F9FCF2

border

#D2D5CC

text

#13150A

muted

#82847D

Preview Lab

Preview with #A3D840

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

Preview Lab → · Contrast checker → · Palette generator →