#57B31B#57B31B

#57B31B is a light, vivid yellow-green. Relative luminance 0.343; OKLCH L 68.3% C 0.197 H 136.8°. Best body text is #000000 at 7.87:1 contrast (WCAG AA passes).

Color values

HEX	#57B31B
RGB	rgb(87, 179, 27)
HSL	hsl(96, 74%, 40%)
HSV	hsv(96, 85%, 70%)
CMYK	cmyk(51.4%, 0%, 84.9%, 29.8%)
CIE-LAB	lab(65.23, -51.53, 61.50)
CIE-LCH	lch(65.23, 80.24, 129.96°)
OKLab	oklab(68.33% -0.1435 0.1347)
OKLCH	oklch(68.33% 0.197 136.8)
XYZ	xyz(20.2478, 34.3441, 6.5988)
Luminance	0.3435 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#57B31B #771BB3

analogous

#A3B31B #57B31B #1BB32B

triadic

#57B31B #1B57B3 #B31B57

tetradic

#57B31B #1BA3B3 #771BB3 #B32B1B

square

#57B31B #1BA3B3 #771BB3 #B32B1B

split-complementary

#57B31B #2B1BB3 #B31BA3

monochromatic

#23490B #3D7E13 #57B31B #73DF2C #96E761

Accessibility & contrast

On white

2.67

#57B31B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.87

#57B31B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #57B31B

7.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##57B31B	#FFFFFF	#000000	##000000
##57B31B	1.00	2.67	7.87	7.87
#FFFFFF	2.67	1.00	21.00	21.00
#000000	7.87	21.00	1.00	1.00
##000000	7.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B9A300

Deuteranopia (green-blind)

#AD9C2F

Tritanopia (blue-blind)

#51AC98

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #57b31b;
/* rgb */ color: rgb(87, 179, 27);
/* oklch */ color: oklch(68.3% 0.197 136.8);

Tailwind

colors: {
  custom: {
    50: '#90ca68',
    500: '#57b31b',
    950: '#000000',
  },
}

SCSS

$custom: #57b31b;
$custom-light: #90ca68;
$custom-dark: #000000;

JSON

{
  "hex": "#57b31b",
  "rgb": {
    "r": 87,
    "g": 179,
    "b": 27
  },
  "hsl": {
    "h": 96.316,
    "s": 73.786,
    "l": 40.392
  },
  "oklch": {
    "l": 0.68326,
    "c": 0.19681,
    "h": 136.8
  },
  "luminance": 0.34346
}

Semantic roles & 50–950 ramp

primary

#57B31B

secondary

#A05ECC

accent

#37F0A7

background

#F9FCF6

surface

#F2F8EB

border

#CCD1C6

text

#0E1307

muted

#7E827A

Preview Lab

Preview with #57B31B

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

Preview Lab → · Contrast checker → · Palette generator →