#31B557#31B557

#31B557 is a light, vivid green. Relative luminance 0.344; OKLCH L 68.2% C 0.175 H 148.6°. Best body text is #000000 at 7.88:1 contrast (WCAG AA passes).

Color values

HEX	#31B557
RGB	rgb(49, 181, 87)
HSL	hsl(137, 57%, 45%)
HSV	hsv(137, 73%, 71%)
CMYK	cmyk(72.9%, 0%, 51.9%, 29%)
CIE-LAB	lab(65.27, -55.35, 37.69)
CIE-LCH	lch(65.27, 66.97, 145.75°)
OKLab	oklab(68.2% -0.1489 0.091)
OKLCH	oklch(68.2% 0.175 148.6)
XYZ	xyz(19.5093, 34.3866, 14.6241)
Luminance	0.3439 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31B557 #B5318F

analogous

#4DB531 #31B557 #31B599

triadic

#31B557 #5731B5 #B55731

tetradic

#31B557 #314DB5 #B5318F #B59931

square

#31B557 #314DB5 #B5318F #B59931

split-complementary

#31B557 #9931B5 #B5314D

monochromatic

#175529 #248540 #31B557 #53D077 #83DD9D

Accessibility & contrast

On white

2.67

#31B557 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.88

#31B557 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #31B557

7.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31B557	#FFFFFF	#000000	##000000
##31B557	1.00	2.67	7.88	7.88
#FFFFFF	2.67	1.00	21.00	21.00
#000000	7.88	21.00	1.00	1.00
##000000	7.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B7A54F

Deuteranopia (green-blind)

#A79A5E

Tritanopia (blue-blind)

#00B19F

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #31b557;
/* rgb */ color: rgb(49, 181, 87);
/* oklch */ color: oklch(68.2% 0.175 148.6);

Tailwind

colors: {
  custom: {
    50: '#7ccc88',
    500: '#31b557',
    950: '#000000',
  },
}

SCSS

$custom: #31b557;
$custom-light: #7ccc88;
$custom-dark: #000000;

JSON

{
  "hex": "#31b557",
  "rgb": {
    "r": 49,
    "g": 181,
    "b": 87
  },
  "hsl": {
    "h": 137.273,
    "s": 57.391,
    "l": 45.098
  },
  "oklch": {
    "l": 0.68202,
    "c": 0.17454,
    "h": 148.6
  },
  "luminance": 0.34389
}

Semantic roles & 50–950 ramp

primary

#31B557

secondary

#C77BB1

accent

#47B4E1

background

#F8FCF8

surface

#EFF9F0

border

#CAD2CB

text

#0B130B

muted

#7C827C

Preview Lab

Preview with #31B557

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

Preview Lab → · Contrast checker → · Palette generator →