#63BB33#63BB33

#63BB33 is a light, vivid yellow-green. Relative luminance 0.384; OKLCH L 71.0% C 0.189 H 136.8°. Best body text is #000000 at 8.69:1 contrast (WCAG AA passes).

Color values

HEX	#63BB33
RGB	rgb(99, 187, 51)
HSL	hsl(99, 57%, 47%)
HSV	hsv(99, 73%, 73%)
CMYK	cmyk(47.1%, 0%, 72.7%, 26.7%)
CIE-LAB	lab(68.34, -49.64, 57.30)
CIE-LCH	lch(68.34, 75.81, 130.91°)
OKLab	oklab(71.05% -0.1378 0.1292)
OKLCH	oklch(71.05% 0.189 136.8)
XYZ	xyz(23.5128, 38.4308, 9.3102)
Luminance	0.3843 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63BB33 #8B33BB

analogous

#A7BB33 #63BB33 #33BB47

triadic

#63BB33 #3363BB #BB3363

tetradic

#63BB33 #33A7BB #8B33BB #BB4733

square

#63BB33 #33A7BB #8B33BB #BB4733

split-complementary

#63BB33 #4733BB #BB33A7

monochromatic

#305B19 #4A8B26 #63BB33 #84D259 #A8DF89

Accessibility & contrast

On white

2.42

#63BB33 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.69

#63BB33 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63BB33

8.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63BB33	#FFFFFF	#000000	##000000
##63BB33	1.00	2.42	8.69	8.69
#FFFFFF	2.42	1.00	21.00	21.00
#000000	8.69	21.00	1.00	1.00
##000000	8.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C1AB1A

Deuteranopia (green-blind)

#B6A440

Tritanopia (blue-blind)

#5EB4A1

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #63bb33;
/* rgb */ color: rgb(99, 187, 51);
/* oklch */ color: oklch(71.0% 0.189 136.8);

Tailwind

colors: {
  custom: {
    50: '#97d073',
    500: '#63bb33',
    950: '#000000',
  },
}

SCSS

$custom: #63bb33;
$custom-light: #97d073;
$custom-dark: #000000;

JSON

{
  "hex": "#63bb33",
  "rgb": {
    "r": 99,
    "g": 187,
    "b": 51
  },
  "hsl": {
    "h": 98.824,
    "s": 57.143,
    "l": 46.667
  },
  "oklch": {
    "l": 0.71048,
    "c": 0.18886,
    "h": 136.8
  },
  "luminance": 0.38432
}

Semantic roles & 50–950 ramp

primary

#63BB33

secondary

#B081C9

accent

#47E0AA

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0E1409

muted

#7E827B

Preview Lab

Preview with #63BB33

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

Preview Lab → · Contrast checker → · Palette generator →