#63BF31#63BF31

#63BF31 is a light, vivid yellow-green. Relative luminance 0.401; OKLCH L 72.1% C 0.195 H 137.0°. Best body text is #000000 at 9.03:1 contrast (WCAG AA passes).

Color values

HEX#63BF31
RGBrgb(99, 191, 49)
HSLhsl(99, 59%, 47%)
HSVhsv(99, 74%, 75%)
CMYKcmyk(48.2%, 0%, 74.3%, 25.1%)
CIE-LABlab(69.57, -51.34, 59.23)
CIE-LCHlch(69.57, 78.38, 130.92°)
OKLaboklab(72.05% -0.1425 0.1329)
OKLCHoklch(72.05% 0.195 137)
XYZxyz(24.3300, 40.1343, 9.3698)
Luminance0.4014 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#63BF31 #8D31BF
analogous
#AABF31 #63BF31 #31BF46
triadic
#63BF31 #3163BF #BF3163
tetradic
#63BF31 #31AABF #8D31BF #BF4631
square
#63BF31 #31AABF #8D31BF #BF4631
split-complementary
#63BF31 #4631BF #BF31AA
monochromatic
#315E18 #4A8E25 #63BF31 #84D459 #A8E18A

Accessibility & contrast

On white

2.33
#63BF31 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.03
#63BF31 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63BF31
9.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##63BF31#FFFFFF#000000##000000
##63BF311.002.339.039.03
#FFFFFF2.331.0021.0021.00
#0000009.0321.001.001.00
##0000009.0321.001.001.00

Color blindness preview

Protanopia (red-blind)
#C5AF14
Deuteranopia (green-blind)
#B9A740
Tritanopia (blue-blind)
#5EB8A4
Achromatopsia (no color)
#AAAAAA

Design tokens & code

CSS
--color: #63bf31;
/* rgb */ color: rgb(99, 191, 49);
/* oklch */ color: oklch(72.1% 0.195 137.0);
Tailwind
colors: {
  custom: {
    50: '#98d373',
    500: '#63bf31',
    950: '#000000',
  },
}
SCSS
$custom: #63bf31;
$custom-light: #98d373;
$custom-dark: #000000;
JSON
{
  "hex": "#63bf31",
  "rgb": {
    "r": 99,
    "g": 191,
    "b": 49
  },
  "hsl": {
    "h": 98.873,
    "s": 59.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.72053,
    "c": 0.19487,
    "h": 137
  },
  "luminance": 0.40136
}

Semantic roles & 50–950 ramp

primary
#63BF31
secondary
#B181CB
accent
#45E2AB
background
#F9FDF7
surface
#F2FAED
border
#CCD3C8
text
#0E1409
muted
#7E837B

Preview Lab

Preview with #63BF31

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

Preview Lab → · Contrast checker → · Palette generator →

#63BF31 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva