#63BF33#63BF33

#63BF33 is a light, vivid yellow-green. Relative luminance 0.402; OKLCH L 72.1% C 0.194 H 137.1°. Best body text is #000000 at 9.03:1 contrast (WCAG AA passes).

Color values

HEX	#63BF33
RGB	rgb(99, 191, 51)
HSL	hsl(99, 58%, 47%)
HSV	hsv(99, 73%, 75%)
CMYK	cmyk(48.2%, 0%, 73.3%, 25.1%)
CIE-LAB	lab(69.58, -51.21, 58.54)
CIE-LCH	lch(69.58, 77.78, 131.18°)
OKLab	oklab(72.07% -0.142 0.1318)
OKLCH	oklch(72.07% 0.194 137.1)
XYZ	xyz(24.3732, 40.1516, 9.5970)
Luminance	0.4015 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63BF33 #8F33BF

analogous

#A9BF33 #63BF33 #33BF49

triadic

#63BF33 #3363BF #BF3363

tetradic

#63BF33 #33A9BF #8F33BF #BF4933

square

#63BF33 #33A9BF #8F33BF #BF4933

split-complementary

#63BF33 #4933BF #BF33A9

monochromatic

#315E19 #4A8F26 #63BF33 #85D35C #A9E08C

Accessibility & contrast

On white

2.33

#63BF33 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.03

#63BF33 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63BF33

9.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63BF33	#FFFFFF	#000000	##000000
##63BF33	1.00	2.33	9.03	9.03
#FFFFFF	2.33	1.00	21.00	21.00
#000000	9.03	21.00	1.00	1.00
##000000	9.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C5AF18

Deuteranopia (green-blind)

#B9A741

Tritanopia (blue-blind)

#5EB8A4

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #63bf33;
/* rgb */ color: rgb(99, 191, 51);
/* oklch */ color: oklch(72.1% 0.194 137.1);

Tailwind

colors: {
  custom: {
    50: '#97d374',
    500: '#63bf33',
    950: '#000000',
  },
}

SCSS

$custom: #63bf33;
$custom-light: #97d374;
$custom-dark: #000000;

JSON

{
  "hex": "#63bf33",
  "rgb": {
    "r": 99,
    "g": 191,
    "b": 51
  },
  "hsl": {
    "h": 99.429,
    "s": 57.851,
    "l": 47.451
  },
  "oklch": {
    "l": 0.72067,
    "c": 0.19373,
    "h": 137.1
  },
  "luminance": 0.40153
}

Semantic roles & 50–950 ramp

primary

#63BF33

secondary

#B283CB

accent

#47E1AC

background

#F9FDF7

surface

#F2FAED

border

#CCD3C8

text

#0E1409

muted

#7E837B

Preview Lab

Preview with #63BF33

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

Preview Lab → · Contrast checker → · Palette generator →