#51AC23#51AC23

#51AC23 is a light, vivid yellow-green. Relative luminance 0.314; OKLCH L 66.3% C 0.188 H 137.7°. Best body text is #000000 at 7.28:1 contrast (WCAG AA passes).

Color values

HEX	#51AC23
RGB	rgb(81, 172, 35)
HSL	hsl(100, 66%, 41%)
HSV	hsv(100, 80%, 67%)
CMYK	cmyk(52.9%, 0%, 79.7%, 32.5%)
CIE-LAB	lab(62.82, -50.25, 57.05)
CIE-LCH	lch(62.82, 76.02, 131.38°)
OKLab	oklab(66.29% -0.1392 0.1266)
OKLCH	oklch(66.29% 0.188 137.7)
XYZ	xyz(18.4486, 31.3743, 6.6735)
Luminance	0.3138 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51AC23 #7E23AC

analogous

#95AC23 #51AC23 #23AC39

triadic

#51AC23 #2351AC #AC2351

tetradic

#51AC23 #2395AC #7E23AC #AC3923

square

#51AC23 #2395AC #7E23AC #AC3923

split-complementary

#51AC23 #3923AC #AC2395

monochromatic

#21460E #397919 #51AC23 #6CD636 #91E069

Accessibility & contrast

On white

2.89

#51AC23 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.28

#51AC23 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AC23

7.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51AC23	#FFFFFF	#000000	##000000
##51AC23	1.00	2.89	7.28	7.28
#FFFFFF	2.89	1.00	21.00	21.00
#000000	7.28	21.00	1.00	1.00
##000000	7.28	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B29D00

Deuteranopia (green-blind)

#A69533

Tritanopia (blue-blind)

#4AA693

Achromatopsia (no color)

#989898

Design tokens & code

CSS

--color: #51ac23;
/* rgb */ color: rgb(81, 172, 35);
/* oklch */ color: oklch(66.3% 0.188 137.7);

Tailwind

colors: {
  custom: {
    50: '#8bc56a',
    500: '#51ac23',
    950: '#000000',
  },
}

SCSS

$custom: #51ac23;
$custom-light: #8bc56a;
$custom-dark: #000000;

JSON

{
  "hex": "#51ac23",
  "rgb": {
    "r": 81,
    "g": 172,
    "b": 35
  },
  "hsl": {
    "h": 99.854,
    "s": 66.184,
    "l": 40.588
  },
  "oklch": {
    "l": 0.66286,
    "c": 0.18819,
    "h": 137.7
  },
  "luminance": 0.31376
}

Semantic roles & 50–950 ramp

primary

#51AC23

secondary

#A564C6

accent

#3FE9B0

background

#F9FCF6

surface

#F1F8EC

border

#CBD1C7

text

#0D1307

muted

#7E827A

Preview Lab

Preview with #51AC23

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

Preview Lab → · Contrast checker → · Palette generator →