#51E37B#51E37B

#51E37B is a light, vivid green. Relative luminance 0.581; OKLCH L 81.4% C 0.190 H 149.5°. Best body text is #000000 at 12.62:1 contrast (WCAG AA passes).

Color values

HEX	#51E37B
RGB	rgb(81, 227, 123)
HSL	hsl(137, 72%, 60%)
HSV	hsv(137, 64%, 89%)
CMYK	cmyk(64.3%, 0%, 45.8%, 11%)
CIE-LAB	lab(80.80, -60.81, 39.51)
CIE-LCH	lch(80.80, 72.52, 146.99°)
OKLab	oklab(81.39% -0.164 0.0967)
OKLCH	oklch(81.39% 0.19 149.5)
XYZ	xyz(34.4350, 58.1140, 28.1374)
Luminance	0.5812 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51E37B #E351B9

analogous

#70E351 #51E37B #51E3C4

triadic

#51E37B #7B51E3 #E37B51

tetradic

#51E37B #5170E3 #E351B9 #E3C451

square

#51E37B #5170E3 #E351B9 #E3C451

split-complementary

#51E37B #C451E3 #E35170

monochromatic

#1AA040 #22D556 #51E37B #86EBA3 #BAF4CB

Accessibility & contrast

On white

1.66

#51E37B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.62

#51E37B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51E37B

12.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51E37B	#FFFFFF	#000000	##000000
##51E37B	1.00	1.66	12.62	12.62
#FFFFFF	1.66	1.00	21.00	21.00
#000000	12.62	21.00	1.00	1.00
##000000	12.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E5D073

Deuteranopia (green-blind)

#D2C482

Tritanopia (blue-blind)

#18DFCA

Achromatopsia (no color)

#C9C9C9

Design tokens & code

CSS

--color: #51e37b;
/* rgb */ color: rgb(81, 227, 123);
/* oklch */ color: oklch(81.4% 0.190 149.5);

Tailwind

colors: {
  custom: {
    50: '#91eda2',
    500: '#51e37b',
    950: '#000000',
  },
}

SCSS

$custom: #51e37b;
$custom-light: #91eda2;
$custom-dark: #000000;

JSON

{
  "hex": "#51e37b",
  "rgb": {
    "r": 81,
    "g": 227,
    "b": 123
  },
  "hsl": {
    "h": 137.26,
    "s": 72.277,
    "l": 60.392
  },
  "oklch": {
    "l": 0.8139,
    "c": 0.19041,
    "h": 149.5
  },
  "luminance": 0.58118
}

Semantic roles & 50–950 ramp

primary

#51E37B

secondary

#A33583

accent

#119CD4

background

#FCFFFC

surface

#F5FEF5

border

#CFD6CF

text

#0E160F

muted

#7F8580

Preview Lab

Preview with #51E37B

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

Preview Lab → · Contrast checker → · Palette generator →