#31B357#31B357

#31B357 is a light, vivid green. Relative luminance 0.336; OKLCH L 67.7% C 0.172 H 148.7°. Best body text is #000000 at 7.72:1 contrast (WCAG AA passes).

Color values

HEX	#31B357
RGB	rgb(49, 179, 87)
HSL	hsl(138, 57%, 45%)
HSV	hsv(138, 73%, 70%)
CMYK	cmyk(72.6%, 0%, 51.4%, 29.8%)
CIE-LAB	lab(64.63, -54.64, 36.90)
CIE-LCH	lch(64.63, 65.93, 145.96°)
OKLab	oklab(67.67% -0.147 0.0892)
OKLCH	oklch(67.67% 0.172 148.7)
XYZ	xyz(19.1055, 33.5791, 14.4895)
Luminance	0.3358 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31B357 #B3318D

analogous

#4CB331 #31B357 #31B398

triadic

#31B357 #5731B3 #B35731

tetradic

#31B357 #314CB3 #B3318D #B39831

square

#31B357 #314CB3 #B3318D #B39831

split-complementary

#31B357 #9831B3 #B3314C

monochromatic

#175328 #248340 #31B357 #52D076 #82DD9C

Accessibility & contrast

On white

2.72

#31B357 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.72

#31B357 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #31B357

7.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31B357	#FFFFFF	#000000	##000000
##31B357	1.00	2.72	7.72	7.72
#FFFFFF	2.72	1.00	21.00	21.00
#000000	7.72	21.00	1.00	1.00
##000000	7.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B5A34F

Deuteranopia (green-blind)

#A5995E

Tritanopia (blue-blind)

#00AF9E

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #31b357;
/* rgb */ color: rgb(49, 179, 87);
/* oklch */ color: oklch(67.7% 0.172 148.7);

Tailwind

colors: {
  custom: {
    50: '#7ccb88',
    500: '#31b357',
    950: '#000000',
  },
}

SCSS

$custom: #31b357;
$custom-light: #7ccb88;
$custom-dark: #000000;

JSON

{
  "hex": "#31b357",
  "rgb": {
    "r": 49,
    "g": 179,
    "b": 87
  },
  "hsl": {
    "h": 137.538,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.67672,
    "c": 0.17198,
    "h": 148.7
  },
  "luminance": 0.33581
}

Semantic roles & 50–950 ramp

primary

#31B357

secondary

#C67AB0

accent

#48B4E0

background

#F8FCF8

surface

#EFF9F0

border

#CAD2CB

text

#0B130B

muted

#7C827C

Preview Lab

Preview with #31B357

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

Preview Lab → · Contrast checker → · Palette generator →