#63BC31#63BC31

#63BC31 is a light, vivid yellow-green. Relative luminance 0.388; OKLCH L 71.3% C 0.191 H 136.8°. Best body text is #000000 at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#63BC31
RGB	rgb(99, 188, 49)
HSL	hsl(98, 59%, 46%)
HSV	hsv(98, 74%, 74%)
CMYK	cmyk(47.3%, 0%, 73.9%, 26.3%)
CIE-LAB	lab(68.63, -50.17, 58.31)
CIE-LCH	lch(68.63, 76.92, 130.71°)
OKLab	oklab(71.29% -0.1393 0.131)
OKLCH	oklch(71.29% 0.191 136.8)
XYZ	xyz(23.6825, 38.8393, 9.1539)
Luminance	0.3884 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63BC31 #8A31BC

analogous

#A9BC31 #63BC31 #31BC44

triadic

#63BC31 #3163BC #BC3163

tetradic

#63BC31 #31A9BC #8A31BC #BC4431

square

#63BC31 #31A9BC #8A31BC #BC4431

split-complementary

#63BC31 #4431BC #BC31A9

monochromatic

#305B18 #498B24 #63BC31 #84D357 #A7E088

Accessibility & contrast

On white

2.40

#63BC31 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.77

#63BC31 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63BC31

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63BC31	#FFFFFF	#000000	##000000
##63BC31	1.00	2.40	8.77	8.77
#FFFFFF	2.40	1.00	21.00	21.00
#000000	8.77	21.00	1.00	1.00
##000000	8.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C2AC15

Deuteranopia (green-blind)

#B7A53F

Tritanopia (blue-blind)

#5EB5A1

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #63bc31;
/* rgb */ color: rgb(99, 188, 49);
/* oklch */ color: oklch(71.3% 0.191 136.8);

Tailwind

colors: {
  custom: {
    50: '#97d172',
    500: '#63bc31',
    950: '#000000',
  },
}

SCSS

$custom: #63bc31;
$custom-light: #97d172;
$custom-dark: #000000;

JSON

{
  "hex": "#63bc31",
  "rgb": {
    "r": 99,
    "g": 188,
    "b": 49
  },
  "hsl": {
    "h": 98.417,
    "s": 58.65,
    "l": 46.471
  },
  "oklch": {
    "l": 0.71289,
    "c": 0.19125,
    "h": 136.8
  },
  "luminance": 0.38841
}

Semantic roles & 50–950 ramp

primary

#63BC31

secondary

#AF7FCA

accent

#46E2AA

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0E1408

muted

#7E827B

Preview Lab

Preview with #63BC31

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

Preview Lab → · Contrast checker → · Palette generator →