#51B415#51B415

#51B415 is a light, highly saturated yellow-green. Relative luminance 0.344; OKLCH L 68.3% C 0.203 H 137.5°. Best body text is #000000 at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#51B415
RGB	rgb(81, 180, 21)
HSL	hsl(97, 79%, 39%)
HSV	hsv(97, 88%, 71%)
CMYK	cmyk(55%, 0%, 88.3%, 29.4%)
CIE-LAB	lab(65.31, -53.84, 62.79)
CIE-LCH	lch(65.31, 82.72, 130.61°)
OKLab	oklab(68.32% -0.1495 0.1368)
OKLCH	oklch(68.32% 0.203 137.5)
XYZ	xyz(19.8493, 34.4444, 6.3118)
Luminance	0.3445 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B415 #7815B4

analogous

#A1B415 #51B415 #15B428

triadic

#51B415 #1551B4 #B41551

tetradic

#51B415 #15A1B4 #7815B4 #B42815

square

#51B415 #15A1B4 #7815B4 #B42815

split-complementary

#51B415 #2815B4 #B415A1

monochromatic

#204608 #387D0F #51B415 #6BE521 #90EC58

Accessibility & contrast

On white

2.66

#51B415 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.89

#51B415 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B415

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B415	#FFFFFF	#000000	##000000
##51B415	1.00	2.66	7.89	7.89
#FFFFFF	2.66	1.00	21.00	21.00
#000000	7.89	21.00	1.00	1.00
##000000	7.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BAA400

Deuteranopia (green-blind)

#AE9C2D

Tritanopia (blue-blind)

#49AD99

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #51b415;
/* rgb */ color: rgb(81, 180, 21);
/* oklch */ color: oklch(68.3% 0.203 137.5);

Tailwind

colors: {
  custom: {
    50: '#8dcb66',
    500: '#51b415',
    950: '#000000',
  },
}

SCSS

$custom: #51b415;
$custom-light: #8dcb66;
$custom-dark: #000000;

JSON

{
  "hex": "#51b415",
  "rgb": {
    "r": 81,
    "g": 180,
    "b": 21
  },
  "hsl": {
    "h": 97.358,
    "s": 79.104,
    "l": 39.412
  },
  "oklch": {
    "l": 0.68324,
    "c": 0.20264,
    "h": 137.5
  },
  "luminance": 0.34446
}

Semantic roles & 50–950 ramp

primary

#51B415

secondary

#A156CF

accent

#32F6AC

background

#F9FCF6

surface

#F2F9EB

border

#CCD2C6

text

#0D1307

muted

#7E827A

Preview Lab

Preview with #51B415

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

Preview Lab → · Contrast checker → · Palette generator →