#A3CA21#A3CA21

#A3CA21 is a light, vivid yellow-green. Relative luminance 0.501; OKLCH L 78.3% C 0.184 H 122.9°. Best body text is #000000 at 11.03:1 contrast (WCAG AA passes).

Color values

HEX	#A3CA21
RGB	rgb(163, 202, 33)
HSL	hsl(74, 72%, 46%)
HSV	hsv(74, 84%, 79%)
CMYK	cmyk(19.3%, 0%, 83.7%, 20.8%)
CIE-LAB	lab(76.15, -33.78, 71.15)
CIE-LCH	lch(76.15, 78.76, 115.40°)
OKLab	oklab(78.3% -0.0998 0.1542)
OKLCH	oklch(78.3% 0.184 122.9)
XYZ	xyz(36.4999, 50.1372, 9.1931)
Luminance	0.5014 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A3CA21 #4821CA

analogous

#CA9C21 #A3CA21 #4ECA21

triadic

#A3CA21 #21A3CA #CA21A3

tetradic

#A3CA21 #21CA9C #4821CA #CA214E

square

#A3CA21 #21CA9C #4821CA #CA214E

split-complementary

#A3CA21 #214ECA #9C21CA

monochromatic

#4E6110 #799518 #A3CA21 #BDE147 #D0EA7C

Accessibility & contrast

On white

1.90

#A3CA21 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.03

#A3CA21 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #A3CA21

11.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A3CA21	#FFFFFF	#000000	##000000
##A3CA21	1.00	1.90	11.03	11.03
#FFFFFF	1.90	1.00	21.00	21.00
#000000	11.03	21.00	1.00	1.00
##000000	11.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D6BD00

Deuteranopia (green-blind)

#D1BC35

Tritanopia (blue-blind)

#ACBFAC

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #a3ca21;
/* rgb */ color: rgb(163, 202, 33);
/* oklch */ color: oklch(78.3% 0.184 122.9);

Tailwind

colors: {
  custom: {
    50: '#c3da6f',
    500: '#a3ca21',
    950: '#000000',
  },
}

SCSS

$custom: #a3ca21;
$custom-light: #c3da6f;
$custom-dark: #000000;

JSON

{
  "hex": "#a3ca21",
  "rgb": {
    "r": 163,
    "g": 202,
    "b": 33
  },
  "hsl": {
    "h": 73.846,
    "s": 71.915,
    "l": 46.078
  },
  "oklch": {
    "l": 0.78298,
    "c": 0.18366,
    "h": 122.9
  },
  "luminance": 0.50137
}

Semantic roles & 50–950 ramp

primary

#A3CA21

secondary

#34246C

accent

#39EF63

background

#FEFEFB

surface

#FAFBF1

border

#D3D4CB

text

#131408

muted

#83837D

Preview Lab

Preview with #A3CA21

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

Preview Lab → · Contrast checker → · Palette generator →