#51B423#51B423

#51B423 is a light, vivid green. Relative luminance 0.345; OKLCH L 68.4% C 0.197 H 138.2°. Best body text is #000000 at 7.90:1 contrast (WCAG AA passes).

Color values

HEX	#51B423
RGB	rgb(81, 180, 35)
HSL	hsl(101, 67%, 42%)
HSV	hsv(101, 81%, 71%)
CMYK	cmyk(55%, 0%, 80.6%, 29.4%)
CIE-LAB	lab(65.37, -53.24, 59.42)
CIE-LCH	lch(65.37, 79.78, 131.86°)
OKLab	oklab(68.38% -0.1472 0.1316)
OKLCH	oklch(68.38% 0.197 138.2)
XYZ	xyz(20.0172, 34.5116, 7.1964)
Luminance	0.3451 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B423 #8623B4

analogous

#99B423 #51B423 #23B43E

triadic

#51B423 #2351B4 #B42351

tetradic

#51B423 #2399B4 #8623B4 #B43E23

square

#51B423 #2399B4 #8623B4 #B43E23

split-complementary

#51B423 #3E23B4 #B42399

monochromatic

#234E0F #3A8119 #51B423 #6DD93B #93E36E

Accessibility & contrast

On white

2.66

#51B423 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.90

#51B423 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B423

7.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B423	#FFFFFF	#000000	##000000
##51B423	1.00	2.66	7.90	7.90
#FFFFFF	2.66	1.00	21.00	21.00
#000000	7.90	21.00	1.00	1.00
##000000	7.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BAA400

Deuteranopia (green-blind)

#AD9C34

Tritanopia (blue-blind)

#48AE9A

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #51b423;
/* rgb */ color: rgb(81, 180, 35);
/* oklch */ color: oklch(68.4% 0.197 138.2);

Tailwind

colors: {
  custom: {
    50: '#8dcb6b',
    500: '#51b423',
    950: '#000000',
  },
}

SCSS

$custom: #51b423;
$custom-light: #8dcb6b;
$custom-dark: #000000;

JSON

{
  "hex": "#51b423",
  "rgb": {
    "r": 81,
    "g": 180,
    "b": 35
  },
  "hsl": {
    "h": 100.966,
    "s": 67.442,
    "l": 42.157
  },
  "oklch": {
    "l": 0.68384,
    "c": 0.19747,
    "h": 138.2
  },
  "luminance": 0.34513
}

Semantic roles & 50–950 ramp

primary

#51B423

secondary

#AB69C9

accent

#3DEAB3

background

#F9FCF6

surface

#F1F9EC

border

#CBD2C7

text

#0D1307

muted

#7E827A

Preview Lab

Preview with #51B423

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

Preview Lab → · Contrast checker → · Palette generator →