#31B540#31B540

#31B540 is a light, vivid green. Relative luminance 0.341; OKLCH L 67.9% C 0.193 H 144.6°. Best body text is #000000 at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#31B540
RGB	rgb(49, 181, 64)
HSL	hsl(127, 57%, 45%)
HSV	hsv(127, 73%, 71%)
CMYK	cmyk(72.9%, 0%, 64.6%, 29%)
CIE-LAB	lab(65.02, -58.33, 48.15)
CIE-LCH	lch(65.02, 75.63, 140.46°)
OKLab	oklab(67.91% -0.1577 0.1119)
OKLCH	oklch(67.91% 0.193 144.6)
XYZ	xyz(18.7147, 34.0688, 10.4391)
Luminance	0.3407 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31B540 #B531A6

analogous

#64B531 #31B540 #31B582

triadic

#31B540 #4031B5 #B54031

tetradic

#31B540 #3164B5 #B531A6 #B58231

square

#31B540 #3164B5 #B531A6 #B58231

split-complementary

#31B540 #8231B5 #B53164

monochromatic

#17551E #24852F #31B540 #53D061 #83DD8D

Accessibility & contrast

On white

2.69

#31B540 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.81

#31B540 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #31B540

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31B540	#FFFFFF	#000000	##000000
##31B540	1.00	2.69	7.81	7.81
#FFFFFF	2.69	1.00	21.00	21.00
#000000	7.81	21.00	1.00	1.00
##000000	7.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B8A432

Deuteranopia (green-blind)

#A99A4A

Tritanopia (blue-blind)

#00B09D

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #31b540;
/* rgb */ color: rgb(49, 181, 64);
/* oklch */ color: oklch(67.9% 0.193 144.6);

Tailwind

colors: {
  custom: {
    50: '#7dcc7a',
    500: '#31b540',
    950: '#000000',
  },
}

SCSS

$custom: #31b540;
$custom-light: #7dcc7a;
$custom-dark: #000000;

JSON

{
  "hex": "#31b540",
  "rgb": {
    "r": 49,
    "g": 181,
    "b": 64
  },
  "hsl": {
    "h": 126.818,
    "s": 57.391,
    "l": 45.098
  },
  "oklch": {
    "l": 0.67913,
    "c": 0.19335,
    "h": 144.6
  },
  "luminance": 0.34071
}

Semantic roles & 50–950 ramp

primary

#31B540

secondary

#C77BBE

accent

#47CFE1

background

#F8FCF7

surface

#EFF9EE

border

#CAD2C9

text

#0B1309

muted

#7C827B

Preview Lab

Preview with #31B540

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

Preview Lab → · Contrast checker → · Palette generator →