#51A523#51A523

#51A523 is a light, vivid yellow-green. Relative luminance 0.288; OKLCH L 64.4% C 0.180 H 137.2°. Best body text is #000000 at 6.76:1 contrast (WCAG AA passes).

Color values

HEX	#51A523
RGB	rgb(81, 165, 35)
HSL	hsl(99, 65%, 39%)
HSV	hsv(99, 79%, 65%)
CMYK	cmyk(50.9%, 0%, 78.8%, 35.3%)
CIE-LAB	lab(60.59, -47.57, 54.93)
CIE-LCH	lch(60.59, 72.67, 130.89°)
OKLab	oklab(64.44% -0.132 0.1222)
OKLCH	oklch(64.44% 0.18 137.2)
XYZ	xyz(17.1513, 28.7797, 6.2410)
Luminance	0.2878 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A523 #7723A5

analogous

#92A523 #51A523 #23A536

triadic

#51A523 #2351A5 #A52351

tetradic

#51A523 #2392A5 #7723A5 #A53623

square

#51A523 #2392A5 #7723A5 #A53623

split-complementary

#51A523 #3623A5 #A52392

monochromatic

#1F400E #387318 #51A523 #6BD332 #8FDE64

Accessibility & contrast

On white

3.11

#51A523 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.76

#51A523 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51A523

6.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A523	#FFFFFF	#000000	##000000
##51A523	1.00	3.11	6.76	6.76
#FFFFFF	3.11	1.00	21.00	21.00
#000000	6.76	21.00	1.00	1.00
##000000	6.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AB9600

Deuteranopia (green-blind)

#A09032

Tritanopia (blue-blind)

#4C9F8D

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #51a523;
/* rgb */ color: rgb(81, 165, 35);
/* oklch */ color: oklch(64.4% 0.180 137.2);

Tailwind

colors: {
  custom: {
    50: '#8ac069',
    500: '#51a523',
    950: '#000000',
  },
}

SCSS

$custom: #51a523;
$custom-light: #8ac069;
$custom-dark: #000000;

JSON

{
  "hex": "#51a523",
  "rgb": {
    "r": 81,
    "g": 165,
    "b": 35
  },
  "hsl": {
    "h": 98.769,
    "s": 65,
    "l": 39.216
  },
  "oklch": {
    "l": 0.64445,
    "c": 0.17989,
    "h": 137.2
  },
  "luminance": 0.28781
}

Semantic roles & 50–950 ramp

primary

#51A523

secondary

#A060C4

accent

#40E8AC

background

#F8FBF6

surface

#F0F7EB

border

#CBD0C6

text

#0D1207

muted

#7D817A

Preview Lab

Preview with #51A523

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

Preview Lab → · Contrast checker → · Palette generator →