#31B255#31B255

#31B255 is a light, vivid green. Relative luminance 0.332; OKLCH L 67.4% C 0.172 H 148.4°. Best body text is #000000 at 7.63:1 contrast (WCAG AA passes).

Color values

HEX	#31B255
RGB	rgb(49, 178, 85)
HSL	hsl(137, 57%, 45%)
HSV	hsv(137, 72%, 70%)
CMYK	cmyk(72.5%, 0%, 52.2%, 30.2%)
CIE-LAB	lab(64.28, -54.58, 37.47)
CIE-LCH	lch(64.28, 66.21, 145.53°)
OKLab	oklab(67.38% -0.1469 0.0904)
OKLCH	oklch(67.38% 0.172 148.4)
XYZ	xyz(18.8253, 33.1475, 13.9985)
Luminance	0.3315 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31B255 #B2318E

analogous

#4EB231 #31B255 #31B296

triadic

#31B255 #5531B2 #B25531

tetradic

#31B255 #314EB2 #B2318E #B29631

square

#31B255 #314EB2 #B2318E #B29631

split-complementary

#31B255 #9631B2 #B2314E

monochromatic

#175227 #24823E #31B255 #51CF74 #81DC9B

Accessibility & contrast

On white

2.75

#31B255 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.63

#31B255 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #31B255

7.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31B255	#FFFFFF	#000000	##000000
##31B255	1.00	2.75	7.63	7.63
#FFFFFF	2.75	1.00	21.00	21.00
#000000	7.63	21.00	1.00	1.00
##000000	7.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B4A24D

Deuteranopia (green-blind)

#A4985C

Tritanopia (blue-blind)

#00AE9D

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #31b255;
/* rgb */ color: rgb(49, 178, 85);
/* oklch */ color: oklch(67.4% 0.172 148.4);

Tailwind

colors: {
  custom: {
    50: '#7cca87',
    500: '#31b255',
    950: '#000000',
  },
}

SCSS

$custom: #31b255;
$custom-light: #7cca87;
$custom-dark: #000000;

JSON

{
  "hex": "#31b255",
  "rgb": {
    "r": 49,
    "g": 178,
    "b": 85
  },
  "hsl": {
    "h": 136.744,
    "s": 56.828,
    "l": 44.51
  },
  "oklch": {
    "l": 0.67377,
    "c": 0.17248,
    "h": 148.4
  },
  "luminance": 0.3315
}

Semantic roles & 50–950 ramp

primary

#31B255

secondary

#C579B0

accent

#48B6E0

background

#F8FCF8

surface

#EFF8F0

border

#CAD1CB

text

#0B130B

muted

#7C827C

Preview Lab

Preview with #31B255

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

Preview Lab → · Contrast checker → · Palette generator →