#31B237#31B237

#31B237 is a light, vivid green. Relative luminance 0.328; OKLCH L 67.0% C 0.196 H 143.6°. Best body text is #000000 at 7.55:1 contrast (WCAG AA passes).

Color values

HEX	#31B237
RGB	rgb(49, 178, 55)
HSL	hsl(123, 57%, 45%)
HSV	hsv(123, 72%, 70%)
CMYK	cmyk(72.5%, 0%, 69.1%, 30.2%)
CIE-LAB	lab(63.97, -58.24, 50.77)
CIE-LCH	lch(63.97, 77.26, 138.92°)
OKLab	oklab(67.02% -0.1578 0.1165)
OKLCH	oklch(67.02% 0.196 143.6)
XYZ	xyz(17.8755, 32.7676, 8.9964)
Luminance	0.3277 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31B237 #B231AC

analogous

#6BB231 #31B237 #31B278

triadic

#31B237 #3731B2 #B23731

tetradic

#31B237 #316BB2 #B231AC #B27831

square

#31B237 #316BB2 #B231AC #B27831

split-complementary

#31B237 #7831B2 #B2316B

monochromatic

#175219 #248228 #31B237 #51CF57 #81DC85

Accessibility & contrast

On white

2.78

#31B237 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.55

#31B237 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #31B237

7.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31B237	#FFFFFF	#000000	##000000
##31B237	1.00	2.78	7.55	7.55
#FFFFFF	2.78	1.00	21.00	21.00
#000000	7.55	21.00	1.00	1.00
##000000	7.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B6A125

Deuteranopia (green-blind)

#A79743

Tritanopia (blue-blind)

#00AD99

Achromatopsia (no color)

#9B9B9B

Design tokens & code

CSS

--color: #31b237;
/* rgb */ color: rgb(49, 178, 55);
/* oklch */ color: oklch(67.0% 0.196 143.6);

Tailwind

colors: {
  custom: {
    50: '#7dca74',
    500: '#31b237',
    950: '#000000',
  },
}

SCSS

$custom: #31b237;
$custom-light: #7dca74;
$custom-dark: #000000;

JSON

{
  "hex": "#31b237",
  "rgb": {
    "r": 49,
    "g": 178,
    "b": 55
  },
  "hsl": {
    "h": 122.791,
    "s": 56.828,
    "l": 44.51
  },
  "oklch": {
    "l": 0.67022,
    "c": 0.19615,
    "h": 143.6
  },
  "luminance": 0.3277
}

Semantic roles & 50–950 ramp

primary

#31B237

secondary

#C579C2

accent

#48D9E0

background

#F8FCF7

surface

#EFF9ED

border

#CAD2C8

text

#0B1309

muted

#7C827B

Preview Lab

Preview with #31B237

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

Preview Lab → · Contrast checker → · Palette generator →