#63BD33#63BD33

#63BD33 is a light, vivid yellow-green. Relative luminance 0.393; OKLCH L 71.6% C 0.191 H 137.0°. Best body text is #000000 at 8.86:1 contrast (WCAG AA passes).

Color values

HEX	#63BD33
RGB	rgb(99, 189, 51)
HSL	hsl(99, 58%, 47%)
HSV	hsv(99, 73%, 74%)
CMYK	cmyk(47.6%, 0%, 73%, 25.9%)
CIE-LAB	lab(68.96, -50.43, 57.92)
CIE-LCH	lch(68.96, 76.80, 131.05°)
OKLab	oklab(71.56% -0.1399 0.1305)
OKLCH	oklch(71.56% 0.191 137)
XYZ	xyz(23.9400, 39.2853, 9.4527)
Luminance	0.3929 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63BD33 #8D33BD

analogous

#A8BD33 #63BD33 #33BD48

triadic

#63BD33 #3363BD #BD3363

tetradic

#63BD33 #33A8BD #8D33BD #BD4833

square

#63BD33 #33A8BD #8D33BD #BD4833

split-complementary

#63BD33 #4833BD #BD33A8

monochromatic

#315D19 #4A8D26 #63BD33 #84D35B #A8E08B

Accessibility & contrast

On white

2.37

#63BD33 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.86

#63BD33 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63BD33

8.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63BD33	#FFFFFF	#000000	##000000
##63BD33	1.00	2.37	8.86	8.86
#FFFFFF	2.37	1.00	21.00	21.00
#000000	8.86	21.00	1.00	1.00
##000000	8.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C3AD19

Deuteranopia (green-blind)

#B7A541

Tritanopia (blue-blind)

#5EB6A2

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #63bd33;
/* rgb */ color: rgb(99, 189, 51);
/* oklch */ color: oklch(71.6% 0.191 137.0);

Tailwind

colors: {
  custom: {
    50: '#97d174',
    500: '#63bd33',
    950: '#000000',
  },
}

SCSS

$custom: #63bd33;
$custom-light: #97d174;
$custom-dark: #000000;

JSON

{
  "hex": "#63bd33",
  "rgb": {
    "r": 99,
    "g": 189,
    "b": 51
  },
  "hsl": {
    "h": 99.13,
    "s": 57.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.71558,
    "c": 0.1913,
    "h": 137
  },
  "luminance": 0.39287
}

Semantic roles & 50–950 ramp

primary

#63BD33

secondary

#B182CA

accent

#47E1AB

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0E1409

muted

#7E827B

Preview Lab

Preview with #63BD33

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

Preview Lab → · Contrast checker → · Palette generator →