#51B577#51B577

#51B577 is a light, vivid green. Relative luminance 0.361; OKLCH L 69.7% C 0.131 H 153.9°. Best body text is #000000 at 8.23:1 contrast (WCAG AA passes).

Color values

HEX	#51B577
RGB	rgb(81, 181, 119)
HSL	hsl(143, 40%, 51%)
HSV	hsv(143, 55%, 71%)
CMYK	cmyk(55.2%, 0%, 34.3%, 29%)
CIE-LAB	lab(66.62, -43.43, 22.99)
CIE-LCH	lch(66.62, 49.14, 152.10°)
OKLab	oklab(69.72% -0.118 0.0578)
OKLCH	oklch(69.72% 0.131 153.9)
XYZ	xyz(23.2452, 36.1269, 23.1974)
Luminance	0.3613 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B577 #B5518F

analogous

#5DB551 #51B577 #51B5A9

triadic

#51B577 #7751B5 #B57751

tetradic

#51B577 #515DB5 #B5518F #B5A951

square

#51B577 #515DB5 #B5518F #B5A951

split-complementary

#51B577 #A951B5 #B5515D

monochromatic

#2A623F #3C8D5B #51B577 #7CC799 #A7DABA

Accessibility & contrast

On white

2.55

#51B577 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.23

#51B577 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B577

8.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B577	#FFFFFF	#000000	##000000
##51B577	1.00	2.55	8.23	8.23
#FFFFFF	2.55	1.00	21.00	21.00
#000000	8.23	21.00	1.00	1.00
##000000	8.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B5A873

Deuteranopia (green-blind)

#A79E7B

Tritanopia (blue-blind)

#34B3A5

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #51b577;
/* rgb */ color: rgb(81, 181, 119);
/* oklch */ color: oklch(69.7% 0.131 153.9);

Tailwind

colors: {
  custom: {
    50: '#8acc9e',
    500: '#51b577',
    950: '#000000',
  },
}

SCSS

$custom: #51b577;
$custom-light: #8acc9e;
$custom-dark: #000000;

JSON

{
  "hex": "#51b577",
  "rgb": {
    "r": 81,
    "g": 181,
    "b": 119
  },
  "hsl": {
    "h": 142.8,
    "s": 40.323,
    "l": 51.373
  },
  "oklch": {
    "l": 0.69716,
    "c": 0.13146,
    "h": 153.9
  },
  "luminance": 0.36129
}

Semantic roles & 50–950 ramp

primary

#51B577

secondary

#C79BB6

accent

#58A2D0

background

#F8FCF9

surface

#F0F9F2

border

#CBD2CC

text

#0C130E

muted

#7D827E

Preview Lab

Preview with #51B577

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

Preview Lab → · Contrast checker → · Palette generator →