#57B221#57B221

#57B221 is a light, vivid yellow-green. Relative luminance 0.340; OKLCH L 68.1% C 0.193 H 137.0°. Best body text is #000000 at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#57B221
RGB	rgb(87, 178, 33)
HSL	hsl(98, 69%, 41%)
HSV	hsv(98, 81%, 70%)
CMYK	cmyk(51.1%, 0%, 81.5%, 30.2%)
CIE-LAB	lab(64.94, -50.88, 59.68)
CIE-LCH	lch(64.94, 78.43, 130.45°)
OKLab	oklab(68.09% -0.1414 0.1317)
OKLCH	oklch(68.09% 0.193 137)
XYZ	xyz(20.1248, 33.9754, 6.9360)
Luminance	0.3398 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#57B221 #7C21B2

analogous

#A0B221 #57B221 #21B234

triadic

#57B221 #2157B2 #B22157

tetradic

#57B221 #21A0B2 #7C21B2 #B23421

square

#57B221 #21A0B2 #7C21B2 #B23421

split-complementary

#57B221 #3421B2 #B221A0

monochromatic

#254B0E #3E7E17 #57B221 #73DA36 #97E36A

Accessibility & contrast

On white

2.69

#57B221 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.80

#57B221 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #57B221

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##57B221	#FFFFFF	#000000	##000000
##57B221	1.00	2.69	7.80	7.80
#FFFFFF	2.69	1.00	21.00	21.00
#000000	7.80	21.00	1.00	1.00
##000000	7.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B8A200

Deuteranopia (green-blind)

#AC9B33

Tritanopia (blue-blind)

#51AB98

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #57b221;
/* rgb */ color: rgb(87, 178, 33);
/* oklch */ color: oklch(68.1% 0.193 137.0);

Tailwind

colors: {
  custom: {
    50: '#90ca6a',
    500: '#57b221',
    950: '#000000',
  },
}

SCSS

$custom: #57b221;
$custom-light: #90ca6a;
$custom-dark: #000000;

JSON

{
  "hex": "#57b221",
  "rgb": {
    "r": 87,
    "g": 178,
    "b": 33
  },
  "hsl": {
    "h": 97.655,
    "s": 68.72,
    "l": 41.373
  },
  "oklch": {
    "l": 0.68093,
    "c": 0.19327,
    "h": 137
  },
  "luminance": 0.33977
}

Semantic roles & 50–950 ramp

primary

#57B221

secondary

#A466C9

accent

#3CECAA

background

#F9FCF6

surface

#F2F8EC

border

#CCD1C7

text

#0D1307

muted

#7E827A

Preview Lab

Preview with #57B221

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

Preview Lab → · Contrast checker → · Palette generator →