#21B23B#21B23B

#21B23B is a light, vivid green. Relative luminance 0.325; OKLCH L 66.8% C 0.198 H 145.2°. Best body text is #000000 at 7.50:1 contrast (WCAG AA passes).

Color values

HEX	#21B23B
RGB	rgb(33, 178, 59)
HSL	hsl(131, 69%, 41%)
HSV	hsv(131, 81%, 70%)
CMYK	cmyk(81.5%, 0%, 66.9%, 30.2%)
CIE-LAB	lab(63.74, -60.13, 48.79)
CIE-LCH	lch(63.74, 77.44, 140.94°)
OKLab	oklab(66.76% -0.1621 0.1128)
OKLCH	oklch(66.76% 0.198 145.2)
XYZ	xyz(17.3358, 32.4778, 9.4920)
Luminance	0.3248 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21B23B #B22198

analogous

#50B221 #21B23B #21B284

triadic

#21B23B #3B21B2 #B23B21

tetradic

#21B23B #2150B2 #B22198 #B28421

square

#21B23B #2150B2 #B22198 #B28421

split-complementary

#21B23B #8421B2 #B22150

monochromatic

#0E4B19 #177E2A #21B23B #36DA54 #6AE380

Accessibility & contrast

On white

2.80

#21B23B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.50

#21B23B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #21B23B

7.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21B23B	#FFFFFF	#000000	##000000
##21B23B	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)

#B5A12B

Deuteranopia (green-blind)

#A59646

Tritanopia (blue-blind)

#00AD9A

Achromatopsia (no color)

#9A9A9A

Design tokens & code

CSS

--color: #21b23b;
/* rgb */ color: rgb(33, 178, 59);
/* oklch */ color: oklch(66.8% 0.198 145.2);

Tailwind

colors: {
  custom: {
    50: '#78ca76',
    500: '#21b23b',
    950: '#000000',
  },
}

SCSS

$custom: #21b23b;
$custom-light: #78ca76;
$custom-dark: #000000;

JSON

{
  "hex": "#21b23b",
  "rgb": {
    "r": 33,
    "g": 178,
    "b": 59
  },
  "hsl": {
    "h": 130.759,
    "s": 68.72,
    "l": 41.373
  },
  "oklch": {
    "l": 0.66758,
    "c": 0.19752,
    "h": 145.2
  },
  "luminance": 0.3248
}

Semantic roles & 50–950 ramp

primary

#21B23B

secondary

#C966B7

accent

#3CCCEC

background

#F8FCF7

surface

#EFF9ED

border

#CAD2C8

text

#0B1309

muted

#7C827B

Preview Lab

Preview with #21B23B

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

Preview Lab → · Contrast checker → · Palette generator →