#63B321#63B321

#63B321 is a light, vivid yellow-green. Relative luminance 0.350; OKLCH L 68.9% C 0.189 H 134.9°. Best body text is #000000 at 8.00:1 contrast (WCAG AA passes).

Color values

HEX	#63B321
RGB	rgb(99, 179, 33)
HSL	hsl(93, 69%, 42%)
HSV	hsv(93, 82%, 70%)
CMYK	cmyk(44.7%, 0%, 81.6%, 29.8%)
CIE-LAB	lab(65.75, -47.53, 60.60)
CIE-LCH	lch(65.75, 77.02, 128.11°)
OKLab	oklab(68.89% -0.1332 0.1335)
OKLCH	oklch(68.89% 0.189 134.9)
XYZ	xyz(21.5397, 35.0014, 7.0595)
Luminance	0.3500 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B321 #7121B3

analogous

#ACB321 #63B321 #21B328

triadic

#63B321 #2163B3 #B32163

tetradic

#63B321 #21ACB3 #7121B3 #B32821

square

#63B321 #21ACB3 #7121B3 #B32821

split-complementary

#63B321 #2821B3 #B321AC

monochromatic

#2A4C0E #467F17 #63B321 #81DA37 #A1E46B

Accessibility & contrast

On white

2.62

#63B321 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.00

#63B321 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B321

8.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B321	#FFFFFF	#000000	##000000
##63B321	1.00	2.62	8.00	8.00
#FFFFFF	2.62	1.00	21.00	21.00
#000000	8.00	21.00	1.00	1.00
##000000	8.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BAA400

Deuteranopia (green-blind)

#AF9D33

Tritanopia (blue-blind)

#61AC99

Achromatopsia (no color)

#A0A0A0

Design tokens & code

CSS

--color: #63b321;
/* rgb */ color: rgb(99, 179, 33);
/* oklch */ color: oklch(68.9% 0.189 134.9);

Tailwind

colors: {
  custom: {
    50: '#97ca6a',
    500: '#63b321',
    950: '#000000',
  },
}

SCSS

$custom: #63b321;
$custom-light: #97ca6a;
$custom-dark: #000000;

JSON

{
  "hex": "#63b321",
  "rgb": {
    "r": 99,
    "g": 179,
    "b": 33
  },
  "hsl": {
    "h": 92.877,
    "s": 68.868,
    "l": 41.569
  },
  "oklch": {
    "l": 0.68892,
    "c": 0.18857,
    "h": 134.9
  },
  "luminance": 0.35003
}

Semantic roles & 50–950 ramp

primary

#63B321

secondary

#9D66CA

accent

#3CEC9C

background

#F9FCF6

surface

#F2F8EC

border

#CCD1C7

text

#0E1307

muted

#7E827A

Preview Lab

Preview with #63B321

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

Preview Lab → · Contrast checker → · Palette generator →