#31B440#31B440

#31B440 is a light, vivid green. Relative luminance 0.337; OKLCH L 67.6% C 0.192 H 144.7°. Best body text is #000000 at 7.73:1 contrast (WCAG AA passes).

Color values

HEX	#31B440
RGB	rgb(49, 180, 64)
HSL	hsl(127, 57%, 45%)
HSV	hsv(127, 73%, 71%)
CMYK	cmyk(72.8%, 0%, 64.4%, 29.4%)
CIE-LAB	lab(64.69, -57.99, 47.79)
CIE-LCH	lch(64.69, 75.15, 140.51°)
OKLab	oklab(67.65% -0.1567 0.1112)
OKLCH	oklch(67.65% 0.192 144.7)
XYZ	xyz(18.5121, 33.6636, 10.3716)
Luminance	0.3367 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31B440 #B431A5

analogous

#64B431 #31B440 #31B481

triadic

#31B440 #4031B4 #B44031

tetradic

#31B440 #3164B4 #B431A5 #B48131

square

#31B440 #3164B4 #B431A5 #B48131

split-complementary

#31B440 #8131B4 #B43164

monochromatic

#17541E #24842F #31B440 #52D061 #82DD8D

Accessibility & contrast

On white

2.72

#31B440 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.73

#31B440 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #31B440

7.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31B440	#FFFFFF	#000000	##000000
##31B440	1.00	2.72	7.73	7.73
#FFFFFF	2.72	1.00	21.00	21.00
#000000	7.73	21.00	1.00	1.00
##000000	7.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B7A332

Deuteranopia (green-blind)

#A8994A

Tritanopia (blue-blind)

#00AF9C

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #31b440;
/* rgb */ color: rgb(49, 180, 64);
/* oklch */ color: oklch(67.6% 0.192 144.7);

Tailwind

colors: {
  custom: {
    50: '#7dcc7a',
    500: '#31b440',
    950: '#000000',
  },
}

SCSS

$custom: #31b440;
$custom-light: #7dcc7a;
$custom-dark: #000000;

JSON

{
  "hex": "#31b440",
  "rgb": {
    "r": 49,
    "g": 180,
    "b": 64
  },
  "hsl": {
    "h": 126.87,
    "s": 57.205,
    "l": 44.902
  },
  "oklch": {
    "l": 0.67646,
    "c": 0.19217,
    "h": 144.7
  },
  "luminance": 0.33666
}

Semantic roles & 50–950 ramp

primary

#31B440

secondary

#C67BBE

accent

#47CFE0

background

#F8FCF7

surface

#EFF9EE

border

#CAD2C9

text

#0B1309

muted

#7C827B

Preview Lab

Preview with #31B440

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

Preview Lab → · Contrast checker → · Palette generator →