#31B538#31B538

#31B538 is a light, vivid green. Relative luminance 0.340; OKLCH L 67.8% C 0.199 H 143.6°. Best body text is #000000 at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#31B538
RGB	rgb(49, 181, 56)
HSL	hsl(123, 57%, 45%)
HSV	hsv(123, 73%, 71%)
CMYK	cmyk(72.9%, 0%, 69.1%, 29%)
CIE-LAB	lab(64.95, -59.14, 51.41)
CIE-LCH	lch(64.95, 78.36, 139.00°)
OKLab	oklab(67.84% -0.1602 0.1179)
OKLCH	oklch(67.84% 0.199 143.6)
XYZ	xyz(18.5031, 33.9842, 9.3251)
Luminance	0.3399 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31B538 #B531AE

analogous

#6CB531 #31B538 #31B57A

triadic

#31B538 #3831B5 #B53831

tetradic

#31B538 #316CB5 #B531AE #B57A31

square

#31B538 #316CB5 #B531AE #B57A31

split-complementary

#31B538 #7A31B5 #B5316C

monochromatic

#17551A #248529 #31B538 #53D059 #83DD88

Accessibility & contrast

On white

2.69

#31B538 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.80

#31B538 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #31B538

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31B538	#FFFFFF	#000000	##000000
##31B538	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)

#B9A426

Deuteranopia (green-blind)

#AA9A44

Tritanopia (blue-blind)

#00B09C

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #31b538;
/* rgb */ color: rgb(49, 181, 56);
/* oklch */ color: oklch(67.8% 0.199 143.6);

Tailwind

colors: {
  custom: {
    50: '#7dcc75',
    500: '#31b538',
    950: '#000000',
  },
}

SCSS

$custom: #31b538;
$custom-light: #7dcc75;
$custom-dark: #000000;

JSON

{
  "hex": "#31b538",
  "rgb": {
    "r": 49,
    "g": 181,
    "b": 56
  },
  "hsl": {
    "h": 123.182,
    "s": 57.391,
    "l": 45.098
  },
  "oklch": {
    "l": 0.67836,
    "c": 0.19894,
    "h": 143.6
  },
  "luminance": 0.33986
}

Semantic roles & 50–950 ramp

primary

#31B538

secondary

#C77BC3

accent

#47D8E1

background

#F8FCF7

surface

#EFF9ED

border

#CAD2C8

text

#0B1409

muted

#7C827B

Preview Lab

Preview with #31B538

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

Preview Lab → · Contrast checker → · Palette generator →