#A4CA21#A4CA21

#A4CA21 is a light, vivid yellow-green. Relative luminance 0.502; OKLCH L 78.4% C 0.183 H 122.6°. Best body text is #000000 at 11.05:1 contrast (WCAG AA passes).

Color values

HEX	#A4CA21
RGB	rgb(164, 202, 33)
HSL	hsl(73, 72%, 46%)
HSV	hsv(73, 84%, 79%)
CMYK	cmyk(18.8%, 0%, 83.7%, 20.8%)
CIE-LAB	lab(76.22, -33.38, 71.23)
CIE-LCH	lch(76.22, 78.66, 115.11°)
OKLab	oklab(78.37% -0.0988 0.1543)
OKLCH	oklch(78.37% 0.183 122.6)
XYZ	xyz(36.7055, 50.2432, 9.2027)
Luminance	0.5024 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A4CA21 #4721CA

analogous

#CA9B21 #A4CA21 #4FCA21

triadic

#A4CA21 #21A4CA #CA21A4

tetradic

#A4CA21 #21CA9B #4721CA #CA214F

square

#A4CA21 #21CA9B #4721CA #CA214F

split-complementary

#A4CA21 #214FCA #9B21CA

monochromatic

#4F6110 #799518 #A4CA21 #BEE147 #D1EA7C

Accessibility & contrast

On white

1.90

#A4CA21 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.05

#A4CA21 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #A4CA21

11.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A4CA21	#FFFFFF	#000000	##000000
##A4CA21	1.00	1.90	11.05	11.05
#FFFFFF	1.90	1.00	21.00	21.00
#000000	11.05	21.00	1.00	1.00
##000000	11.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D6BD00

Deuteranopia (green-blind)

#D2BC35

Tritanopia (blue-blind)

#ADBFAC

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #a4ca21;
/* rgb */ color: rgb(164, 202, 33);
/* oklch */ color: oklch(78.4% 0.183 122.6);

Tailwind

colors: {
  custom: {
    50: '#c3da6f',
    500: '#a4ca21',
    950: '#000000',
  },
}

SCSS

$custom: #a4ca21;
$custom-light: #c3da6f;
$custom-dark: #000000;

JSON

{
  "hex": "#a4ca21",
  "rgb": {
    "r": 164,
    "g": 202,
    "b": 33
  },
  "hsl": {
    "h": 73.491,
    "s": 71.915,
    "l": 46.078
  },
  "oklch": {
    "l": 0.78367,
    "c": 0.18322,
    "h": 122.6
  },
  "luminance": 0.50243
}

Semantic roles & 50–950 ramp

primary

#A4CA21

secondary

#34246C

accent

#39EF62

background

#FEFEFB

surface

#FAFBF1

border

#D3D4CB

text

#131408

muted

#83837D

Preview Lab

Preview with #A4CA21

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

Preview Lab → · Contrast checker → · Palette generator →