#31B256#31B256

#31B256 is a light, vivid green. Relative luminance 0.332; OKLCH L 67.4% C 0.172 H 148.6°. Best body text is #000000 at 7.63:1 contrast (WCAG AA passes).

Color values

HEX	#31B256
RGB	rgb(49, 178, 86)
HSL	hsl(137, 57%, 45%)
HSV	hsv(137, 72%, 70%)
CMYK	cmyk(72.5%, 0%, 51.7%, 30.2%)
CIE-LAB	lab(64.29, -54.43, 36.99)
CIE-LCH	lch(64.29, 65.81, 145.80°)
OKLab	oklab(67.39% -0.1465 0.0894)
OKLCH	oklch(67.39% 0.172 148.6)
XYZ	xyz(18.8653, 33.1635, 14.2093)
Luminance	0.3317 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31B256 #B2318D

analogous

#4DB231 #31B256 #31B296

triadic

#31B256 #5631B2 #B25631

tetradic

#31B256 #314DB2 #B2318D #B29631

square

#31B256 #314DB2 #B2318D #B29631

split-complementary

#31B256 #9631B2 #B2314D

monochromatic

#175228 #24823F #31B256 #51CF75 #81DC9B

Accessibility & contrast

On white

2.75

#31B256 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.63

#31B256 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #31B256

7.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31B256	#FFFFFF	#000000	##000000
##31B256	1.00	2.75	7.63	7.63
#FFFFFF	2.75	1.00	21.00	21.00
#000000	7.63	21.00	1.00	1.00
##000000	7.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B4A24E

Deuteranopia (green-blind)

#A4985D

Tritanopia (blue-blind)

#00AE9D

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #31b256;
/* rgb */ color: rgb(49, 178, 86);
/* oklch */ color: oklch(67.4% 0.172 148.6);

Tailwind

colors: {
  custom: {
    50: '#7bca87',
    500: '#31b256',
    950: '#000000',
  },
}

SCSS

$custom: #31b256;
$custom-light: #7bca87;
$custom-dark: #000000;

JSON

{
  "hex": "#31b256",
  "rgb": {
    "r": 49,
    "g": 178,
    "b": 86
  },
  "hsl": {
    "h": 137.209,
    "s": 56.828,
    "l": 44.51
  },
  "oklch": {
    "l": 0.67391,
    "c": 0.17159,
    "h": 148.6
  },
  "luminance": 0.33166
}

Semantic roles & 50–950 ramp

primary

#31B256

secondary

#C579B0

accent

#48B4E0

background

#F8FCF8

surface

#EFF8F0

border

#CAD1CB

text

#0B130B

muted

#7C827C

Preview Lab

Preview with #31B256

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

Preview Lab → · Contrast checker → · Palette generator →