#51E47B#51E47B

#51E47B is a light, vivid green. Relative luminance 0.587; OKLCH L 81.6% C 0.192 H 149.4°. Best body text is #000000 at 12.73:1 contrast (WCAG AA passes).

Color values

HEX	#51E47B
RGB	rgb(81, 228, 123)
HSL	hsl(137, 73%, 61%)
HSV	hsv(137, 64%, 89%)
CMYK	cmyk(64.5%, 0%, 46.1%, 10.6%)
CIE-LAB	lab(81.11, -61.17, 39.90)
CIE-LCH	lch(81.11, 73.03, 146.89°)
OKLab	oklab(81.64% -0.165 0.0976)
OKLCH	oklch(81.64% 0.192 149.4)
XYZ	xyz(34.7093, 58.6626, 28.2289)
Luminance	0.5867 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51E47B #E451BA

analogous

#70E451 #51E47B #51E4C4

triadic

#51E47B #7B51E4 #E47B51

tetradic

#51E47B #5170E4 #E451BA #E4C451

square

#51E47B #5170E4 #E451BA #E4C451

split-complementary

#51E47B #C451E4 #E45170

monochromatic

#19A240 #21D755 #51E47B #86ECA3 #BBF4CB

Accessibility & contrast

On white

1.65

#51E47B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.73

#51E47B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51E47B

12.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51E47B	#FFFFFF	#000000	##000000
##51E47B	1.00	1.65	12.73	12.73
#FFFFFF	1.65	1.00	21.00	21.00
#000000	12.73	21.00	1.00	1.00
##000000	12.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E6D173

Deuteranopia (green-blind)

#D3C482

Tritanopia (blue-blind)

#17E0CB

Achromatopsia (no color)

#C9C9C9

Design tokens & code

CSS

--color: #51e47b;
/* rgb */ color: rgb(81, 228, 123);
/* oklch */ color: oklch(81.6% 0.192 149.4);

Tailwind

colors: {
  custom: {
    50: '#91eea3',
    500: '#51e47b',
    950: '#000000',
  },
}

SCSS

$custom: #51e47b;
$custom-light: #91eea3;
$custom-dark: #000000;

JSON

{
  "hex": "#51e47b",
  "rgb": {
    "r": 81,
    "g": 228,
    "b": 123
  },
  "hsl": {
    "h": 137.143,
    "s": 73.134,
    "l": 60.588
  },
  "oklch": {
    "l": 0.8164,
    "c": 0.19169,
    "h": 149.4
  },
  "luminance": 0.58666
}

Semantic roles & 50–950 ramp

primary

#51E47B

secondary

#A43584

accent

#109DD5

background

#FCFFFC

surface

#F5FEF5

border

#CFD6CF

text

#0E160F

muted

#7F8580

Preview Lab

Preview with #51E47B

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

Preview Lab → · Contrast checker → · Palette generator →