#21BB31#21BB31

#21BB31 is a light, highly saturated green. Relative luminance 0.361; OKLCH L 69.1% C 0.214 H 143.9°. Best body text is #000000 at 8.22:1 contrast (WCAG AA passes).

Color values

HEX	#21BB31
RGB	rgb(33, 187, 49)
HSL	hsl(126, 70%, 43%)
HSV	hsv(126, 82%, 73%)
CMYK	cmyk(82.4%, 0%, 73.8%, 26.7%)
CIE-LAB	lab(66.58, -63.86, 55.68)
CIE-LCH	lch(66.58, 84.73, 138.92°)
OKLab	oklab(69.1% -0.1727 0.1261)
OKLCH	oklch(69.1% 0.214 143.9)
XYZ	xyz(18.9506, 36.0834, 8.8712)
Luminance	0.3609 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21BB31 #BB21AB

analogous

#5EBB21 #21BB31 #21BB7E

triadic

#21BB31 #3121BB #BB3121

tetradic

#21BB31 #215EBB #BB21AB #BB7E21

square

#21BB31 #215EBB #BB21AB #BB7E21

split-complementary

#21BB31 #7E21BB #BB215E

monochromatic

#0F5316 #188723 #21BB31 #3DDD4D #71E67D

Accessibility & contrast

On white

2.56

#21BB31 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.22

#21BB31 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #21BB31

8.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21BB31	#FFFFFF	#000000	##000000
##21BB31	1.00	2.56	8.22	8.22
#FFFFFF	2.56	1.00	21.00	21.00
#000000	8.22	21.00	1.00	1.00
##000000	8.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BFA917

Deuteranopia (green-blind)

#AF9E40

Tritanopia (blue-blind)

#00B6A0

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #21bb31;
/* rgb */ color: rgb(33, 187, 49);
/* oklch */ color: oklch(69.1% 0.214 143.9);

Tailwind

colors: {
  custom: {
    50: '#7ad172',
    500: '#21bb31',
    950: '#000000',
  },
}

SCSS

$custom: #21bb31;
$custom-light: #7ad172;
$custom-dark: #000000;

JSON

{
  "hex": "#21bb31",
  "rgb": {
    "r": 33,
    "g": 187,
    "b": 49
  },
  "hsl": {
    "h": 126.234,
    "s": 70,
    "l": 43.137
  },
  "oklch": {
    "l": 0.69103,
    "c": 0.21381,
    "h": 143.9
  },
  "luminance": 0.36086
}

Semantic roles & 50–950 ramp

primary

#21BB31

secondary

#CC6BC2

accent

#3BDAED

background

#F8FDF7

surface

#EFFAED

border

#CAD3C8

text

#0B1408

muted

#7C837B

Preview Lab

Preview with #21BB31

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

Preview Lab → · Contrast checker → · Palette generator →