#51D97B#51D97B

#51D97B is a light, vivid green. Relative luminance 0.528; OKLCH L 78.9% C 0.177 H 150.4°. Best body text is #000000 at 11.56:1 contrast (WCAG AA passes).

Color values

HEX	#51D97B
RGB	rgb(81, 217, 123)
HSL	hsl(139, 64%, 58%)
HSV	hsv(139, 63%, 85%)
CMYK	cmyk(62.7%, 0%, 43.3%, 14.9%)
CIE-LAB	lab(77.76, -57.10, 35.61)
CIE-LCH	lch(77.76, 67.29, 148.05°)
OKLab	oklab(78.88% -0.1542 0.0877)
OKLCH	oklch(78.88% 0.177 150.4)
XYZ	xyz(31.7789, 52.8019, 27.2521)
Luminance	0.5281 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51D97B #D951AF

analogous

#6BD951 #51D97B #51D9BF

triadic

#51D97B #7B51D9 #D97B51

tetradic

#51D97B #516BD9 #D951AF #D9BF51

square

#51D97B #516BD9 #D951AF #D9BF51

split-complementary

#51D97B #BF51D9 #D9516B

monochromatic

#1F9042 #2AC259 #51D97B #83E4A1 #B5EFC7

Accessibility & contrast

On white

1.82

#51D97B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.56

#51D97B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D97B

11.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51D97B	#FFFFFF	#000000	##000000
##51D97B	1.00	1.82	11.56	11.56
#FFFFFF	1.82	1.00	21.00	21.00
#000000	11.56	21.00	1.00	1.00
##000000	11.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DAC874

Deuteranopia (green-blind)

#C9BB81

Tritanopia (blue-blind)

#20D5C2

Achromatopsia (no color)

#C0C0C0

Design tokens & code

CSS

--color: #51d97b;
/* rgb */ color: rgb(81, 217, 123);
/* oklch */ color: oklch(78.9% 0.177 150.4);

Tailwind

colors: {
  custom: {
    50: '#8fe6a2',
    500: '#51d97b',
    950: '#000000',
  },
}

SCSS

$custom: #51d97b;
$custom-light: #8fe6a2;
$custom-dark: #000000;

JSON

{
  "hex": "#51d97b",
  "rgb": {
    "r": 81,
    "g": 217,
    "b": 123
  },
  "hsl": {
    "h": 138.529,
    "s": 64.151,
    "l": 58.431
  },
  "oklch": {
    "l": 0.78882,
    "c": 0.17737,
    "h": 150.4
  },
  "luminance": 0.52805
}

Semantic roles & 50–950 ramp

primary

#51D97B

secondary

#953979

accent

#41B4E7

background

#FCFEFC

surface

#F5FCF5

border

#CFD5CF

text

#0E160F

muted

#7F8480

Preview Lab

Preview with #51D97B

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

Preview Lab → · Contrast checker → · Palette generator →