#31B251#31B251

#31B251 is a light, vivid green. Relative luminance 0.331; OKLCH L 67.3% C 0.176 H 147.6°. Best body text is #000000 at 7.62:1 contrast (WCAG AA passes).

Color values

HEX	#31B251
RGB	rgb(49, 178, 81)
HSL	hsl(135, 57%, 45%)
HSV	hsv(135, 72%, 70%)
CMYK	cmyk(72.5%, 0%, 54.5%, 30.2%)
CIE-LAB	lab(64.23, -55.16, 39.38)
CIE-LCH	lch(64.23, 67.78, 144.48°)
OKLab	oklab(67.32% -0.1485 0.0944)
OKLCH	oklch(67.32% 0.176 147.6)
XYZ	xyz(18.6708, 33.0857, 13.1852)
Luminance	0.3309 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31B251 #B23192

analogous

#51B231 #31B251 #31B292

triadic

#31B251 #5131B2 #B25131

tetradic

#31B251 #3151B2 #B23192 #B29231

square

#31B251 #3151B2 #B23192 #B29231

split-complementary

#31B251 #9231B2 #B23151

monochromatic

#175225 #24823B #31B251 #51CF70 #81DC98

Accessibility & contrast

On white

2.76

#31B251 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.62

#31B251 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #31B251

7.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31B251	#FFFFFF	#000000	##000000
##31B251	1.00	2.76	7.62	7.62
#FFFFFF	2.76	1.00	21.00	21.00
#000000	7.62	21.00	1.00	1.00
##000000	7.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B4A248

Deuteranopia (green-blind)

#A59858

Tritanopia (blue-blind)

#00AE9C

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #31b251;
/* rgb */ color: rgb(49, 178, 81);
/* oklch */ color: oklch(67.3% 0.176 147.6);

Tailwind

colors: {
  custom: {
    50: '#7cca84',
    500: '#31b251',
    950: '#000000',
  },
}

SCSS

$custom: #31b251;
$custom-light: #7cca84;
$custom-dark: #000000;

JSON

{
  "hex": "#31b251",
  "rgb": {
    "r": 49,
    "g": 178,
    "b": 81
  },
  "hsl": {
    "h": 134.884,
    "s": 56.828,
    "l": 44.51
  },
  "oklch": {
    "l": 0.67319,
    "c": 0.17599,
    "h": 147.6
  },
  "luminance": 0.33088
}

Semantic roles & 50–950 ramp

primary

#31B251

secondary

#C579B3

accent

#48BAE0

background

#F8FCF8

surface

#EFF9EF

border

#CAD2CA

text

#0B130B

muted

#7C827C

Preview Lab

Preview with #31B251

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

Preview Lab → · Contrast checker → · Palette generator →