#31B231#31B231

#31B231 is a light, vivid green. Relative luminance 0.327; OKLCH L 67.0% C 0.200 H 142.9°. Best body text is #000000 at 7.54:1 contrast (WCAG AA passes).

Color values

HEX	#31B231
RGB	rgb(49, 178, 49)
HSL	hsl(120, 57%, 45%)
HSV	hsv(120, 72%, 70%)
CMYK	cmyk(72.5%, 0%, 72.5%, 30.2%)
CIE-LAB	lab(63.93, -58.77, 53.06)
CIE-LCH	lch(63.93, 79.18, 137.93°)
OKLab	oklab(66.97% -0.1596 0.1205)
OKLCH	oklch(66.97% 0.2 142.9)
XYZ	xyz(17.7403, 32.7135, 8.2845)
Luminance	0.3272 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31B231 #B231B2

analogous

#72B231 #31B231 #31B272

triadic

#31B231 #3131B2 #B23131

tetradic

#31B231 #3172B2 #B231B2 #B27231

square

#31B231 #3172B2 #B231B2 #B27231

split-complementary

#31B231 #7231B2 #B23172

monochromatic

#175217 #248224 #31B231 #51CF51 #81DC81

Accessibility & contrast

On white

2.78

#31B231 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.54

#31B231 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #31B231

7.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31B231	#FFFFFF	#000000	##000000
##31B231	1.00	2.78	7.54	7.54
#FFFFFF	2.78	1.00	21.00	21.00
#000000	7.54	21.00	1.00	1.00
##000000	7.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B6A11B

Deuteranopia (green-blind)

#A7973E

Tritanopia (blue-blind)

#00AD99

Achromatopsia (no color)

#9B9B9B

Design tokens & code

CSS

--color: #31b231;
/* rgb */ color: rgb(49, 178, 49);
/* oklch */ color: oklch(67.0% 0.200 142.9);

Tailwind

colors: {
  custom: {
    50: '#7dca71',
    500: '#31b231',
    950: '#000000',
  },
}

SCSS

$custom: #31b231;
$custom-light: #7dca71;
$custom-dark: #000000;

JSON

{
  "hex": "#31b231",
  "rgb": {
    "r": 49,
    "g": 178,
    "b": 49
  },
  "hsl": {
    "h": 120,
    "s": 56.828,
    "l": 44.51
  },
  "oklch": {
    "l": 0.66971,
    "c": 0.19996,
    "h": 142.9
  },
  "luminance": 0.32716
}

Semantic roles & 50–950 ramp

primary

#31B231

secondary

#C579C5

accent

#48E0E0

background

#F8FCF7

surface

#EFF9ED

border

#CAD2C8

text

#0B1308

muted

#7C827B

Preview Lab

Preview with #31B231

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

Preview Lab → · Contrast checker → · Palette generator →