#21BC51#21BC51

#21BC51 is a light, vivid green. Relative luminance 0.369; OKLCH L 69.7% C 0.192 H 147.9°. Best body text is #000000 at 8.38:1 contrast (WCAG AA passes).

Color values

HEX	#21BC51
RGB	rgb(33, 188, 81)
HSL	hsl(139, 70%, 43%)
HSV	hsv(139, 82%, 74%)
CMYK	cmyk(82.4%, 0%, 56.9%, 26.3%)
CIE-LAB	lab(67.19, -60.71, 42.86)
CIE-LCH	lch(67.19, 74.31, 144.78°)
OKLab	oklab(69.7% -0.163 0.1021)
OKLCH	oklch(69.7% 0.192 147.9)
XYZ	xyz(20.0940, 36.8814, 13.8428)
Luminance	0.3688 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21BC51 #BC218C

analogous

#3EBC21 #21BC51 #21BC9E

triadic

#21BC51 #5121BC #BC5121

tetradic

#21BC51 #213EBC #BC218C #BC9E21

square

#21BC51 #213EBC #BC218C #BC9E21

split-complementary

#21BC51 #9E21BC #BC213E

monochromatic

#0F5424 #18883B #21BC51 #3DDD6F #71E695

Accessibility & contrast

On white

2.51

#21BC51 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.38

#21BC51 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #21BC51

8.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21BC51	#FFFFFF	#000000	##000000
##21BC51	1.00	2.51	8.38	8.38
#FFFFFF	2.51	1.00	21.00	21.00
#000000	8.38	21.00	1.00	1.00
##000000	8.38	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BEAB47

Deuteranopia (green-blind)

#AD9F5A

Tritanopia (blue-blind)

#00B8A4

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #21bc51;
/* rgb */ color: rgb(33, 188, 81);
/* oklch */ color: oklch(69.7% 0.192 147.9);

Tailwind

colors: {
  custom: {
    50: '#79d185',
    500: '#21bc51',
    950: '#000000',
  },
}

SCSS

$custom: #21bc51;
$custom-light: #79d185;
$custom-dark: #000000;

JSON

{
  "hex": "#21bc51",
  "rgb": {
    "r": 33,
    "g": 188,
    "b": 81
  },
  "hsl": {
    "h": 138.581,
    "s": 70.136,
    "l": 43.333
  },
  "oklch": {
    "l": 0.69696,
    "c": 0.19232,
    "h": 147.9
  },
  "luminance": 0.36884
}

Semantic roles & 50–950 ramp

primary

#21BC51

secondary

#CD6CAF

accent

#3BB6ED

background

#F8FDF8

surface

#EFFAEF

border

#CAD3CA

text

#0B140B

muted

#7C837C

Preview Lab

Preview with #21BC51

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

Preview Lab → · Contrast checker → · Palette generator →