#31B757#31B757

#31B757 is a light, vivid green. Relative luminance 0.352; OKLCH L 68.7% C 0.177 H 148.4°. Best body text is #000000 at 8.04:1 contrast (WCAG AA passes).

Color values

HEX	#31B757
RGB	rgb(49, 183, 87)
HSL	hsl(137, 58%, 45%)
HSV	hsv(137, 73%, 72%)
CMYK	cmyk(73.2%, 0%, 52.5%, 28.2%)
CIE-LAB	lab(65.91, -56.06, 38.48)
CIE-LCH	lch(65.91, 68.00, 145.53°)
OKLab	oklab(68.73% -0.1508 0.0928)
OKLCH	oklch(68.73% 0.177 148.4)
XYZ	xyz(19.9189, 35.2058, 14.7606)
Luminance	0.3521 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31B757 #B73191

analogous

#4EB731 #31B757 #31B79A

triadic

#31B757 #5731B7 #B75731

tetradic

#31B757 #314EB7 #B73191 #B79A31

square

#31B757 #314EB7 #B73191 #B79A31

split-complementary

#31B757 #9A31B7 #B7314E

monochromatic

#175629 #248740 #31B757 #54D177 #84DE9E

Accessibility & contrast

On white

2.61

#31B757 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.04

#31B757 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #31B757

8.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31B757	#FFFFFF	#000000	##000000
##31B757	1.00	2.61	8.04	8.04
#FFFFFF	2.61	1.00	21.00	21.00
#000000	8.04	21.00	1.00	1.00
##000000	8.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B9A74F

Deuteranopia (green-blind)

#A99C5E

Tritanopia (blue-blind)

#00B3A1

Achromatopsia (no color)

#A0A0A0

Design tokens & code

CSS

--color: #31b757;
/* rgb */ color: rgb(49, 183, 87);
/* oklch */ color: oklch(68.7% 0.177 148.4);

Tailwind

colors: {
  custom: {
    50: '#7dce88',
    500: '#31b757',
    950: '#000000',
  },
}

SCSS

$custom: #31b757;
$custom-light: #7dce88;
$custom-dark: #000000;

JSON

{
  "hex": "#31b757",
  "rgb": {
    "r": 49,
    "g": 183,
    "b": 87
  },
  "hsl": {
    "h": 137.015,
    "s": 57.759,
    "l": 45.49
  },
  "oklch": {
    "l": 0.68732,
    "c": 0.17707,
    "h": 148.4
  },
  "luminance": 0.35208
}

Semantic roles & 50–950 ramp

primary

#31B757

secondary

#C87CB2

accent

#47B5E1

background

#F8FCF8

surface

#EFF9F0

border

#CAD2CB

text

#0B140B

muted

#7C827C

Preview Lab

Preview with #31B757

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

Preview Lab → · Contrast checker → · Palette generator →