#63B538#63B538

#63B538 is a light, vivid yellow-green. Relative luminance 0.360; OKLCH L 69.6% C 0.178 H 136.8°. Best body text is #000000 at 8.20:1 contrast (WCAG AA passes).

Color values

HEX	#63B538
RGB	rgb(99, 181, 56)
HSL	hsl(99, 53%, 46%)
HSV	hsv(99, 69%, 71%)
CMYK	cmyk(45.3%, 0%, 69.1%, 29%)
CIE-LAB	lab(66.51, -46.87, 53.53)
CIE-LCH	lch(66.51, 71.15, 131.21°)
OKLab	oklab(69.56% -0.1299 0.122)
OKLCH	oklch(69.56% 0.178 136.8)
XYZ	xyz(22.3826, 35.9845, 9.5069)
Luminance	0.3599 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B538 #8A38B5

analogous

#A2B538 #63B538 #38B54C

triadic

#63B538 #3863B5 #B53863

tetradic

#63B538 #38A2B5 #8A38B5 #B54C38

square

#63B538 #38A2B5 #8A38B5 #B54C38

split-complementary

#63B538 #4C38B5 #B538A2

monochromatic

#30581B #49862A #63B538 #84CD5D #A7DB8C

Accessibility & contrast

On white

2.56

#63B538 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.20

#63B538 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B538

8.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B538	#FFFFFF	#000000	##000000
##63B538	1.00	2.56	8.20	8.20
#FFFFFF	2.56	1.00	21.00	21.00
#000000	8.20	21.00	1.00	1.00
##000000	8.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BBA625

Deuteranopia (green-blind)

#B09F43

Tritanopia (blue-blind)

#5FAF9C

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #63b538;
/* rgb */ color: rgb(99, 181, 56);
/* oklch */ color: oklch(69.6% 0.178 136.8);

Tailwind

colors: {
  custom: {
    50: '#96cc75',
    500: '#63b538',
    950: '#000000',
  },
}

SCSS

$custom: #63b538;
$custom-light: #96cc75;
$custom-dark: #000000;

JSON

{
  "hex": "#63b538",
  "rgb": {
    "r": 99,
    "g": 181,
    "b": 56
  },
  "hsl": {
    "h": 99.36,
    "s": 52.743,
    "l": 46.471
  },
  "oklch": {
    "l": 0.69558,
    "c": 0.1782,
    "h": 136.8
  },
  "luminance": 0.35986
}

Semantic roles & 50–950 ramp

primary

#63B538

secondary

#AF83C6

accent

#4CDCAA

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0E1309

muted

#7E827B

Preview Lab

Preview with #63B538

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

Preview Lab → · Contrast checker → · Palette generator →