#21B31B#21B31B

#21B31B is a light, highly saturated green. Relative luminance 0.326; OKLCH L 66.8% C 0.216 H 142.4°. Best body text is #000000 at 7.53:1 contrast (WCAG AA passes).

Color values

HEX	#21B31B
RGB	rgb(33, 179, 27)
HSL	hsl(118, 74%, 40%)
HSV	hsv(118, 85%, 70%)
CMYK	cmyk(81.6%, 0%, 84.9%, 29.8%)
CIE-LAB	lab(63.87, -62.86, 59.76)
CIE-LCH	lch(63.87, 86.74, 136.45°)
OKLab	oklab(66.81% -0.1708 0.1317)
OKLCH	oklch(66.81% 0.216 142.4)
XYZ	xyz(16.9441, 32.6406, 6.4440)
Luminance	0.3264 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21B31B #AD1BB3

analogous

#6DB31B #21B31B #1BB361

triadic

#21B31B #1B21B3 #B31B21

tetradic

#21B31B #1B6DB3 #AD1BB3 #B3611B

square

#21B31B #1B6DB3 #AD1BB3 #B3611B

split-complementary

#21B31B #611BB3 #B31B6D

monochromatic

#0D490B #177E13 #21B31B #33DF2C #66E761

Accessibility & contrast

On white

2.79

#21B31B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.53

#21B31B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #21B31B

7.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21B31B	#FFFFFF	#000000	##000000
##21B31B	1.00	2.79	7.53	7.53
#FFFFFF	2.79	1.00	21.00	21.00
#000000	7.53	21.00	1.00	1.00
##000000	7.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B7A100

Deuteranopia (green-blind)

#A89730

Tritanopia (blue-blind)

#00AD98

Achromatopsia (no color)

#9B9B9B

Design tokens & code

CSS

--color: #21b31b;
/* rgb */ color: rgb(33, 179, 27);
/* oklch */ color: oklch(66.8% 0.216 142.4);

Tailwind

colors: {
  custom: {
    50: '#79cb67',
    500: '#21b31b',
    950: '#000000',
  },
}

SCSS

$custom: #21b31b;
$custom-light: #79cb67;
$custom-dark: #000000;

JSON

{
  "hex": "#21b31b",
  "rgb": {
    "r": 33,
    "g": 179,
    "b": 27
  },
  "hsl": {
    "h": 117.632,
    "s": 73.786,
    "l": 40.392
  },
  "oklch": {
    "l": 0.66807,
    "c": 0.21568,
    "h": 142.4
  },
  "luminance": 0.32643
}

Semantic roles & 50–950 ramp

primary

#21B31B

secondary

#C75ECC

accent

#37F0E9

background

#F8FCF6

surface

#EFF9EB

border

#CAD2C6

text

#0B1307

muted

#7C827A

Preview Lab

Preview with #21B31B

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

Preview Lab → · Contrast checker → · Palette generator →