#51B138#51B138

#51B138 is a light, vivid green. Relative luminance 0.335; OKLCH L 67.7% C 0.182 H 139.8°. Best body text is #000000 at 7.70:1 contrast (WCAG AA passes).

Color values

HEX	#51B138
RGB	rgb(81, 177, 56)
HSL	hsl(108, 52%, 46%)
HSV	hsv(108, 68%, 69%)
CMYK	cmyk(54.2%, 0%, 68.4%, 30.6%)
CIE-LAB	lab(64.55, -50.64, 51.25)
CIE-LCH	lch(64.55, 72.04, 134.66°)
OKLab	oklab(67.75% -0.139 0.1174)
OKLCH	oklch(67.75% 0.182 139.8)
XYZ	xyz(19.8285, 33.4775, 9.1575)
Luminance	0.3348 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B138 #9838B1

analogous

#8DB138 #51B138 #38B15B

triadic

#51B138 #3851B1 #B13851

tetradic

#51B138 #388DB1 #9838B1 #B15B38

square

#51B138 #388DB1 #9838B1 #B15B38

split-complementary

#51B138 #5B38B1 #B1388D

monochromatic

#26541B #3C8329 #51B138 #72CB5B #9ADA8A

Accessibility & contrast

On white

2.73

#51B138 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.70

#51B138 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B138

7.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B138	#FFFFFF	#000000	##000000
##51B138	1.00	2.73	7.70	7.70
#FFFFFF	2.73	1.00	21.00	21.00
#000000	7.70	21.00	1.00	1.00
##000000	7.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B6A227

Deuteranopia (green-blind)

#AA9943

Tritanopia (blue-blind)

#47AB99

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #51b138;
/* rgb */ color: rgb(81, 177, 56);
/* oklch */ color: oklch(67.7% 0.182 139.8);

Tailwind

colors: {
  custom: {
    50: '#8bc975',
    500: '#51b138',
    950: '#000000',
  },
}

SCSS

$custom: #51b138;
$custom-light: #8bc975;
$custom-dark: #000000;

JSON

{
  "hex": "#51b138",
  "rgb": {
    "r": 81,
    "g": 177,
    "b": 56
  },
  "hsl": {
    "h": 107.603,
    "s": 51.931,
    "l": 45.686
  },
  "oklch": {
    "l": 0.67749,
    "c": 0.18192,
    "h": 139.8
  },
  "luminance": 0.33479
}

Semantic roles & 50–950 ramp

primary

#51B138

secondary

#B681C4

accent

#4CDBBE

background

#F9FCF7

surface

#F1F8ED

border

#CBD1C8

text

#0D1309

muted

#7E827B

Preview Lab

Preview with #51B138

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

Preview Lab → · Contrast checker → · Palette generator →