#63B528#63B528

#63B528 is a light, vivid yellow-green. Relative luminance 0.359; OKLCH L 69.4% C 0.188 H 135.5°. Best body text is #000000 at 8.17:1 contrast (WCAG AA passes).

Color values

HEX	#63B528
RGB	rgb(99, 181, 40)
HSL	hsl(95, 64%, 43%)
HSV	hsv(95, 78%, 71%)
CMYK	cmyk(45.3%, 0%, 77.9%, 29%)
CIE-LAB	lab(66.41, -47.97, 59.14)
CIE-LCH	lch(66.41, 76.15, 129.04°)
OKLab	oklab(69.44% -0.134 0.1314)
OKLCH	oklch(69.44% 0.188 135.5)
XYZ	xyz(22.0519, 35.8522, 7.7653)
Luminance	0.3585 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B528 #7A28B5

analogous

#A9B528 #63B528 #28B534

triadic

#63B528 #2863B5 #B52863

tetradic

#63B528 #28A9B5 #7A28B5 #B53428

square

#63B528 #28A9B5 #7A28B5 #B53428

split-complementary

#63B528 #3428B5 #B528A9

monochromatic

#2C5112 #48831D #63B528 #81D644 #A3E177

Accessibility & contrast

On white

2.57

#63B528 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.17

#63B528 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B528

8.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B528	#FFFFFF	#000000	##000000
##63B528	1.00	2.57	8.17	8.17
#FFFFFF	2.57	1.00	21.00	21.00
#000000	8.17	21.00	1.00	1.00
##000000	8.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BCA600

Deuteranopia (green-blind)

#B19F38

Tritanopia (blue-blind)

#60AE9B

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #63b528;
/* rgb */ color: rgb(99, 181, 40);
/* oklch */ color: oklch(69.4% 0.188 135.5);

Tailwind

colors: {
  custom: {
    50: '#97cc6d',
    500: '#63b528',
    950: '#000000',
  },
}

SCSS

$custom: #63b528;
$custom-light: #97cc6d;
$custom-dark: #000000;

JSON

{
  "hex": "#63b528",
  "rgb": {
    "r": 99,
    "g": 181,
    "b": 40
  },
  "hsl": {
    "h": 94.894,
    "s": 63.801,
    "l": 43.333
  },
  "oklch": {
    "l": 0.69442,
    "c": 0.18767,
    "h": 135.5
  },
  "luminance": 0.35854
}

Semantic roles & 50–950 ramp

primary

#63B528

secondary

#A470C8

accent

#41E7A1

background

#F9FCF6

surface

#F2F9EC

border

#CCD2C7

text

#0E1308

muted

#7E827B

Preview Lab

Preview with #63B528

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

Preview Lab → · Contrast checker → · Palette generator →