#21B23F#21B23F

#21B23F is a light, vivid green. Relative luminance 0.325; OKLCH L 66.8% C 0.195 H 145.7°. Best body text is #000000 at 7.50:1 contrast (WCAG AA passes).

Color values

HEX	#21B23F
RGB	rgb(33, 178, 63)
HSL	hsl(132, 69%, 41%)
HSV	hsv(132, 81%, 70%)
CMYK	cmyk(81.5%, 0%, 64.6%, 30.2%)
CIE-LAB	lab(63.77, -59.70, 47.12)
CIE-LCH	lch(63.77, 76.06, 141.71°)
OKLab	oklab(66.8% -0.1608 0.1097)
OKLCH	oklch(66.8% 0.195 145.7)
XYZ	xyz(17.4435, 32.5209, 10.0595)
Luminance	0.3252 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21B23F #B22194

analogous

#4CB221 #21B23F #21B288

triadic

#21B23F #3F21B2 #B23F21

tetradic

#21B23F #214CB2 #B22194 #B28821

square

#21B23F #214CB2 #B22194 #B28821

split-complementary

#21B23F #8821B2 #B2214C

monochromatic

#0E4B1A #177E2D #21B23F #36DA58 #6AE383

Accessibility & contrast

On white

2.80

#21B23F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.50

#21B23F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #21B23F

7.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21B23F	#FFFFFF	#000000	##000000
##21B23F	1.00	2.80	7.50	7.50
#FFFFFF	2.80	1.00	21.00	21.00
#000000	7.50	21.00	1.00	1.00
##000000	7.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B5A131

Deuteranopia (green-blind)

#A59649

Tritanopia (blue-blind)

#00AD9A

Achromatopsia (no color)

#9A9A9A

Design tokens & code

CSS

--color: #21b23f;
/* rgb */ color: rgb(33, 178, 63);
/* oklch */ color: oklch(66.8% 0.195 145.7);

Tailwind

colors: {
  custom: {
    50: '#77ca79',
    500: '#21b23f',
    950: '#000000',
  },
}

SCSS

$custom: #21b23f;
$custom-light: #77ca79;
$custom-dark: #000000;

JSON

{
  "hex": "#21b23f",
  "rgb": {
    "r": 33,
    "g": 178,
    "b": 63
  },
  "hsl": {
    "h": 132.414,
    "s": 68.72,
    "l": 41.373
  },
  "oklch": {
    "l": 0.66799,
    "c": 0.19464,
    "h": 145.7
  },
  "luminance": 0.32523
}

Semantic roles & 50–950 ramp

primary

#21B23F

secondary

#C966B5

accent

#3CC7EC

background

#F8FCF7

surface

#EFF9EE

border

#CAD2C9

text

#0A1309

muted

#7C827B

Preview Lab

Preview with #21B23F

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

Preview Lab → · Contrast checker → · Palette generator →