#31B257#31B257

#31B257 is a light, vivid green. Relative luminance 0.332; OKLCH L 67.4% C 0.171 H 148.8°. Best body text is #000000 at 7.64:1 contrast (WCAG AA passes).

Color values

HEX	#31B257
RGB	rgb(49, 178, 87)
HSL	hsl(138, 57%, 45%)
HSV	hsv(138, 72%, 70%)
CMYK	cmyk(72.5%, 0%, 51.1%, 30.2%)
CIE-LAB	lab(64.31, -54.28, 36.51)
CIE-LCH	lch(64.31, 65.41, 146.08°)
OKLab	oklab(67.41% -0.1461 0.0883)
OKLCH	oklch(67.41% 0.171 148.8)
XYZ	xyz(18.9058, 33.1797, 14.4229)
Luminance	0.3318 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31B257 #B2318C

analogous

#4CB231 #31B257 #31B297

triadic

#31B257 #5731B2 #B25731

tetradic

#31B257 #314CB2 #B2318C #B29731

square

#31B257 #314CB2 #B2318C #B29731

split-complementary

#31B257 #9731B2 #B2314C

monochromatic

#175228 #248240 #31B257 #51CF76 #81DC9C

Accessibility & contrast

On white

2.75

#31B257 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.64

#31B257 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #31B257

7.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31B257	#FFFFFF	#000000	##000000
##31B257	1.00	2.75	7.64	7.64
#FFFFFF	2.75	1.00	21.00	21.00
#000000	7.64	21.00	1.00	1.00
##000000	7.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B4A24F

Deuteranopia (green-blind)

#A4985E

Tritanopia (blue-blind)

#00AF9D

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #31b257;
/* rgb */ color: rgb(49, 178, 87);
/* oklch */ color: oklch(67.4% 0.171 148.8);

Tailwind

colors: {
  custom: {
    50: '#7bca88',
    500: '#31b257',
    950: '#000000',
  },
}

SCSS

$custom: #31b257;
$custom-light: #7bca88;
$custom-dark: #000000;

JSON

{
  "hex": "#31b257",
  "rgb": {
    "r": 49,
    "g": 178,
    "b": 87
  },
  "hsl": {
    "h": 137.674,
    "s": 56.828,
    "l": 44.51
  },
  "oklch": {
    "l": 0.67407,
    "c": 0.1707,
    "h": 148.8
  },
  "luminance": 0.33182
}

Semantic roles & 50–950 ramp

primary

#31B257

secondary

#C579AF

accent

#48B3E0

background

#F8FCF8

surface

#EFF8F0

border

#CAD1CB

text

#0B130B

muted

#7C827C

Preview Lab

Preview with #31B257

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

Preview Lab → · Contrast checker → · Palette generator →