#51A71B#51A71B

#51A71B is a light, vivid yellow-green. Relative luminance 0.295; OKLCH L 64.9% C 0.186 H 136.9°. Best body text is #000000 at 6.89:1 contrast (WCAG AA passes).

Color values

HEX	#51A71B
RGB	rgb(81, 167, 27)
HSL	hsl(97, 72%, 38%)
HSV	hsv(97, 84%, 65%)
CMYK	cmyk(51.5%, 0%, 83.8%, 34.5%)
CIE-LAB	lab(61.19, -48.76, 57.80)
CIE-LCH	lch(61.19, 75.62, 130.15°)
OKLab	oklab(64.93% -0.1356 0.127)
OKLCH	oklch(64.93% 0.186 136.9)
XYZ	xyz(17.4094, 29.4646, 5.8066)
Luminance	0.2947 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A71B #711BA7

analogous

#97A71B #51A71B #1BA72B

triadic

#51A71B #1B51A7 #A71B51

tetradic

#51A71B #1B97A7 #711BA7 #A72B1B

square

#51A71B #1B97A7 #711BA7 #A72B1B

split-complementary

#51A71B #2B1BA7 #A71B97

monochromatic

#1E3E0A #377212 #51A71B #6BDC24 #8EE458

Accessibility & contrast

On white

3.05

#51A71B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.89

#51A71B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51A71B

6.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A71B	#FFFFFF	#000000	##000000
##51A71B	1.00	3.05	6.89	6.89
#FFFFFF	3.05	1.00	21.00	21.00
#000000	6.89	21.00	1.00	1.00
##000000	6.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AD9800

Deuteranopia (green-blind)

#A2912D

Tritanopia (blue-blind)

#4CA18E

Achromatopsia (no color)

#949494

Design tokens & code

CSS

--color: #51a71b;
/* rgb */ color: rgb(81, 167, 27);
/* oklch */ color: oklch(64.9% 0.186 136.9);

Tailwind

colors: {
  custom: {
    50: '#8bc266',
    500: '#51a71b',
    950: '#000000',
  },
}

SCSS

$custom: #51a71b;
$custom-light: #8bc266;
$custom-dark: #000000;

JSON

{
  "hex": "#51a71b",
  "rgb": {
    "r": 81,
    "g": 167,
    "b": 27
  },
  "hsl": {
    "h": 96.857,
    "s": 72.165,
    "l": 38.039
  },
  "oklch": {
    "l": 0.64929,
    "c": 0.18585,
    "h": 136.9
  },
  "luminance": 0.29466
}

Semantic roles & 50–950 ramp

primary

#51A71B

secondary

#9C56C8

accent

#39EFA9

background

#F9FCF6

surface

#F1F8EB

border

#CBD1C6

text

#0D1206

muted

#7E817A

Preview Lab

Preview with #51A71B

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

Preview Lab → · Contrast checker → · Palette generator →