#21B23A#21B23A

#21B23A is a light, vivid green. Relative luminance 0.325; OKLCH L 66.7% C 0.198 H 145.0°. Best body text is #000000 at 7.49:1 contrast (WCAG AA passes).

Color values

HEX	#21B23A
RGB	rgb(33, 178, 58)
HSL	hsl(130, 69%, 41%)
HSV	hsv(130, 81%, 70%)
CMYK	cmyk(81.5%, 0%, 67.4%, 30.2%)
CIE-LAB	lab(63.73, -60.24, 49.20)
CIE-LCH	lch(63.73, 77.78, 140.76°)
OKLab	oklab(66.75% -0.1624 0.1136)
OKLCH	oklch(66.75% 0.198 145)
XYZ	xyz(17.3101, 32.4675, 9.3567)
Luminance	0.3247 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21B23A #B22199

analogous

#51B221 #21B23A #21B283

triadic

#21B23A #3A21B2 #B23A21

tetradic

#21B23A #2151B2 #B22199 #B28321

square

#21B23A #2151B2 #B22199 #B28321

split-complementary

#21B23A #8321B2 #B22151

monochromatic

#0E4B18 #177E29 #21B23A #36DA53 #6AE37F

Accessibility & contrast

On white

2.80

#21B23A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.49

#21B23A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #21B23A

7.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21B23A	#FFFFFF	#000000	##000000
##21B23A	1.00	2.80	7.49	7.49
#FFFFFF	2.80	1.00	21.00	21.00
#000000	7.49	21.00	1.00	1.00
##000000	7.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B5A12A

Deuteranopia (green-blind)

#A69645

Tritanopia (blue-blind)

#00AD99

Achromatopsia (no color)

#9A9A9A

Design tokens & code

CSS

--color: #21b23a;
/* rgb */ color: rgb(33, 178, 58);
/* oklch */ color: oklch(66.7% 0.198 145.0);

Tailwind

colors: {
  custom: {
    50: '#78ca76',
    500: '#21b23a',
    950: '#000000',
  },
}

SCSS

$custom: #21b23a;
$custom-light: #78ca76;
$custom-dark: #000000;

JSON

{
  "hex": "#21b23a",
  "rgb": {
    "r": 33,
    "g": 178,
    "b": 58
  },
  "hsl": {
    "h": 130.345,
    "s": 68.72,
    "l": 41.373
  },
  "oklch": {
    "l": 0.66749,
    "c": 0.19821,
    "h": 145
  },
  "luminance": 0.3247
}

Semantic roles & 50–950 ramp

primary

#21B23A

secondary

#C966B8

accent

#3CCDEC

background

#F8FCF7

surface

#EFF9ED

border

#CAD2C8

text

#0B1309

muted

#7C827B

Preview Lab

Preview with #21B23A

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

Preview Lab → · Contrast checker → · Palette generator →