#51A71F#51A71F

#51A71F is a light, vivid yellow-green. Relative luminance 0.295; OKLCH L 64.9% C 0.184 H 137.1°. Best body text is #000000 at 6.90:1 contrast (WCAG AA passes).

Color values

HEX	#51A71F
RGB	rgb(81, 167, 31)
HSL	hsl(98, 69%, 39%)
HSV	hsv(98, 81%, 65%)
CMYK	cmyk(51.5%, 0%, 81.4%, 34.5%)
CIE-LAB	lab(61.21, -48.56, 56.73)
CIE-LCH	lch(61.21, 74.67, 130.57°)
OKLab	oklab(64.95% -0.1349 0.1253)
OKLCH	oklch(64.95% 0.184 137.1)
XYZ	xyz(17.4588, 29.4844, 6.0671)
Luminance	0.2949 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A71F #751FA7

analogous

#95A71F #51A71F #1FA731

triadic

#51A71F #1F51A7 #A71F51

tetradic

#51A71F #1F95A7 #751FA7 #A7311F

square

#51A71F #1F95A7 #751FA7 #A7311F

split-complementary

#51A71F #311FA7 #A71F95

monochromatic

#1F400C #387315 #51A71F #6BD82B #8FE15F

Accessibility & contrast

On white

3.04

#51A71F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.90

#51A71F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51A71F

6.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A71F	#FFFFFF	#000000	##000000
##51A71F	1.00	3.04	6.90	6.90
#FFFFFF	3.04	1.00	21.00	21.00
#000000	6.90	21.00	1.00	1.00
##000000	6.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AD9800

Deuteranopia (green-blind)

#A2912F

Tritanopia (blue-blind)

#4BA18E

Achromatopsia (no color)

#949494

Design tokens & code

CSS

--color: #51a71f;
/* rgb */ color: rgb(81, 167, 31);
/* oklch */ color: oklch(64.9% 0.184 137.1);

Tailwind

colors: {
  custom: {
    50: '#8bc267',
    500: '#51a71f',
    950: '#000000',
  },
}

SCSS

$custom: #51a71f;
$custom-light: #8bc267;
$custom-dark: #000000;

JSON

{
  "hex": "#51a71f",
  "rgb": {
    "r": 81,
    "g": 167,
    "b": 31
  },
  "hsl": {
    "h": 97.941,
    "s": 68.687,
    "l": 38.824
  },
  "oklch": {
    "l": 0.64949,
    "c": 0.18416,
    "h": 137.1
  },
  "luminance": 0.29486
}

Semantic roles & 50–950 ramp

primary

#51A71F

secondary

#9F5CC6

accent

#3CECAB

background

#F9FCF6

surface

#F1F8EB

border

#CBD1C6

text

#0D1207

muted

#7E817A

Preview Lab

Preview with #51A71F

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

Preview Lab → · Contrast checker → · Palette generator →