#63AD31#63AD31

#63AD31 is a light, vivid yellow-green. Relative luminance 0.328; OKLCH L 67.5% C 0.173 H 135.4°. Best body text is #000000 at 7.55:1 contrast (WCAG AA passes).

Color values

HEX	#63AD31
RGB	rgb(99, 173, 49)
HSL	hsl(96, 56%, 44%)
HSV	hsv(96, 72%, 68%)
CMYK	cmyk(42.8%, 0%, 71.7%, 32.2%)
CIE-LAB	lab(63.97, -44.13, 53.62)
CIE-LCH	lch(63.97, 69.45, 129.46°)
OKLab	oklab(67.46% -0.123 0.1212)
OKLCH	oklch(67.46% 0.173 135.4)
XYZ	xyz(20.6431, 32.7604, 8.1408)
Luminance	0.3276 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63AD31 #7B31AD

analogous

#A1AD31 #63AD31 #31AD3D

triadic

#63AD31 #3163AD #AD3163

tetradic

#63AD31 #31A1AD #7B31AD #AD3D31

square

#63AD31 #31A1AD #7B31AD #AD3D31

split-complementary

#63AD31 #3D31AD #AD31A1

monochromatic

#2C4E16 #487D23 #63AD31 #81CD4E #A3DA7E

Accessibility & contrast

On white

2.78

#63AD31 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.55

#63AD31 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63AD31

7.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63AD31	#FFFFFF	#000000	##000000
##63AD31	1.00	2.78	7.55	7.55
#FFFFFF	2.78	1.00	21.00	21.00
#000000	7.55	21.00	1.00	1.00
##000000	7.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B39F1C

Deuteranopia (green-blind)

#A9993D

Tritanopia (blue-blind)

#61A695

Achromatopsia (no color)

#9B9B9B

Design tokens & code

CSS

--color: #63ad31;
/* rgb */ color: rgb(99, 173, 49);
/* oklch */ color: oklch(67.5% 0.173 135.4);

Tailwind

colors: {
  custom: {
    50: '#95c671',
    500: '#63ad31',
    950: '#000000',
  },
}

SCSS

$custom: #63ad31;
$custom-light: #95c671;
$custom-dark: #000000;

JSON

{
  "hex": "#63ad31",
  "rgb": {
    "r": 99,
    "g": 173,
    "b": 49
  },
  "hsl": {
    "h": 95.806,
    "s": 55.856,
    "l": 43.529
  },
  "oklch": {
    "l": 0.67458,
    "c": 0.17269,
    "h": 135.4
  },
  "luminance": 0.32762
}

Semantic roles & 50–950 ramp

primary

#63AD31

secondary

#A477C3

accent

#49DFA2

background

#F9FCF7

surface

#F2F8ED

border

#CCD1C8

text

#0E1308

muted

#7E827B

Preview Lab

Preview with #63AD31

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

Preview Lab → · Contrast checker → · Palette generator →