#51B573#51B573

#51B573 is a light, vivid green. Relative luminance 0.360; OKLCH L 69.6% C 0.135 H 152.4°. Best body text is #000000 at 8.21:1 contrast (WCAG AA passes).

Color values

HEX	#51B573
RGB	rgb(81, 181, 115)
HSL	hsl(140, 40%, 51%)
HSV	hsv(140, 55%, 71%)
CMYK	cmyk(55.2%, 0%, 36.5%, 29%)
CIE-LAB	lab(66.55, -44.17, 25.03)
CIE-LCH	lch(66.55, 50.77, 150.46°)
OKLab	oklab(69.63% -0.1199 0.0627)
OKLCH	oklch(69.63% 0.135 152.4)
XYZ	xyz(23.0100, 36.0328, 21.9588)
Luminance	0.3604 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B573 #B55193

analogous

#61B551 #51B573 #51B5A5

triadic

#51B573 #7351B5 #B57351

tetradic

#51B573 #5161B5 #B55193 #B5A551

square

#51B573 #5161B5 #B55193 #B5A551

split-complementary

#51B573 #A551B5 #B55161

monochromatic

#2A623D #3C8D57 #51B573 #7CC796 #A7DAB8

Accessibility & contrast

On white

2.56

#51B573 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.21

#51B573 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B573

8.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B573	#FFFFFF	#000000	##000000
##51B573	1.00	2.56	8.21	8.21
#FFFFFF	2.56	1.00	21.00	21.00
#000000	8.21	21.00	1.00	1.00
##000000	8.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B5A86F

Deuteranopia (green-blind)

#A79E77

Tritanopia (blue-blind)

#36B3A4

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #51b573;
/* rgb */ color: rgb(81, 181, 115);
/* oklch */ color: oklch(69.6% 0.135 152.4);

Tailwind

colors: {
  custom: {
    50: '#8acc9c',
    500: '#51b573',
    950: '#000000',
  },
}

SCSS

$custom: #51b573;
$custom-light: #8acc9c;
$custom-dark: #000000;

JSON

{
  "hex": "#51b573",
  "rgb": {
    "r": 81,
    "g": 181,
    "b": 115
  },
  "hsl": {
    "h": 140.4,
    "s": 40.323,
    "l": 51.373
  },
  "oklch": {
    "l": 0.69633,
    "c": 0.1353,
    "h": 152.4
  },
  "luminance": 0.36035
}

Semantic roles & 50–950 ramp

primary

#51B573

secondary

#C79BB8

accent

#58A7D0

background

#F8FCF9

surface

#F0F9F2

border

#CBD2CC

text

#0C130E

muted

#7D827E

Preview Lab

Preview with #51B573

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

Preview Lab → · Contrast checker → · Palette generator →