#31B551#31B551

#31B551 is a light, vivid green. Relative luminance 0.343; OKLCH L 68.1% C 0.180 H 147.4°. Best body text is #000000 at 7.86:1 contrast (WCAG AA passes).

Color values

HEX	#31B551
RGB	rgb(49, 181, 81)
HSL	hsl(135, 57%, 45%)
HSV	hsv(135, 73%, 71%)
CMYK	cmyk(72.9%, 0%, 55.2%, 29%)
CIE-LAB	lab(65.19, -56.22, 40.54)
CIE-LCH	lch(65.19, 69.31, 144.20°)
OKLab	oklab(68.12% -0.1514 0.0969)
OKLCH	oklch(68.12% 0.18 147.4)
XYZ	xyz(19.2743, 34.2926, 13.3863)
Luminance	0.3429 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31B551 #B53195

analogous

#53B531 #31B551 #31B593

triadic

#31B551 #5131B5 #B55131

tetradic

#31B551 #3153B5 #B53195 #B59331

square

#31B551 #3153B5 #B53195 #B59331

split-complementary

#31B551 #9331B5 #B53153

monochromatic

#175526 #24853B #31B551 #53D071 #83DD99

Accessibility & contrast

On white

2.67

#31B551 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.86

#31B551 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #31B551

7.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31B551	#FFFFFF	#000000	##000000
##31B551	1.00	2.67	7.86	7.86
#FFFFFF	2.67	1.00	21.00	21.00
#000000	7.86	21.00	1.00	1.00
##000000	7.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B7A548

Deuteranopia (green-blind)

#A89A59

Tritanopia (blue-blind)

#00B19F

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #31b551;
/* rgb */ color: rgb(49, 181, 81);
/* oklch */ color: oklch(68.1% 0.180 147.4);

Tailwind

colors: {
  custom: {
    50: '#7ccc84',
    500: '#31b551',
    950: '#000000',
  },
}

SCSS

$custom: #31b551;
$custom-light: #7ccc84;
$custom-dark: #000000;

JSON

{
  "hex": "#31b551",
  "rgb": {
    "r": 49,
    "g": 181,
    "b": 81
  },
  "hsl": {
    "h": 134.545,
    "s": 57.391,
    "l": 45.098
  },
  "oklch": {
    "l": 0.68117,
    "c": 0.17976,
    "h": 147.4
  },
  "luminance": 0.34295
}

Semantic roles & 50–950 ramp

primary

#31B551

secondary

#C77BB4

accent

#47BBE1

background

#F8FCF8

surface

#EFF9EF

border

#CAD2CA

text

#0B130B

muted

#7C827C

Preview Lab

Preview with #31B551

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

Preview Lab → · Contrast checker → · Palette generator →