#51A51B#51A51B

#51A51B is a light, vivid yellow-green. Relative luminance 0.287; OKLCH L 64.4% C 0.184 H 136.7°. Best body text is #000000 at 6.75:1 contrast (WCAG AA passes).

Color values

HEX	#51A51B
RGB	rgb(81, 165, 27)
HSL	hsl(97, 72%, 38%)
HSV	hsv(97, 84%, 65%)
CMYK	cmyk(50.9%, 0%, 83.6%, 35.3%)
CIE-LAB	lab(60.55, -47.99, 57.23)
CIE-LCH	lch(60.55, 74.69, 129.98°)
OKLab	oklab(64.4% -0.1336 0.1258)
OKLCH	oklch(64.4% 0.184 136.7)
XYZ	xyz(17.0458, 28.7375, 5.6854)
Luminance	0.2874 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A51B #6F1BA5

analogous

#96A51B #51A51B #1BA52A

triadic

#51A51B #1B51A5 #A51B51

tetradic

#51A51B #1B96A5 #6F1BA5 #A52A1B

square

#51A51B #1B96A5 #6F1BA5 #A52A1B

split-complementary

#51A51B #2A1BA5 #A51B96

monochromatic

#1D3C0A #377012 #51A51B #6BDA24 #8EE357

Accessibility & contrast

On white

3.11

#51A51B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.75

#51A51B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51A51B

6.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A51B	#FFFFFF	#000000	##000000
##51A51B	1.00	3.11	6.75	6.75
#FFFFFF	3.11	1.00	21.00	21.00
#000000	6.75	21.00	1.00	1.00
##000000	6.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AB9600

Deuteranopia (green-blind)

#A08F2D

Tritanopia (blue-blind)

#4C9F8C

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #51a51b;
/* rgb */ color: rgb(81, 165, 27);
/* oklch */ color: oklch(64.4% 0.184 136.7);

Tailwind

colors: {
  custom: {
    50: '#8bc065',
    500: '#51a51b',
    950: '#000000',
  },
}

SCSS

$custom: #51a51b;
$custom-light: #8bc065;
$custom-dark: #000000;

JSON

{
  "hex": "#51a51b",
  "rgb": {
    "r": 81,
    "g": 165,
    "b": 27
  },
  "hsl": {
    "h": 96.522,
    "s": 71.875,
    "l": 37.647
  },
  "oklch": {
    "l": 0.64402,
    "c": 0.18351,
    "h": 136.7
  },
  "luminance": 0.28739
}

Semantic roles & 50–950 ramp

primary

#51A51B

secondary

#9A55C7

accent

#39EFA8

background

#F9FBF6

surface

#F1F7EB

border

#CBD0C6

text

#0D1206

muted

#7E817A

Preview Lab

Preview with #51A51B

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

Preview Lab → · Contrast checker → · Palette generator →