#63B531#63B531

#63B531 is a light, vivid yellow-green. Relative luminance 0.359; OKLCH L 69.5% C 0.183 H 136.2°. Best body text is #000000 at 8.18:1 contrast (WCAG AA passes).

Color values

HEX	#63B531
RGB	rgb(99, 181, 49)
HSL	hsl(97, 57%, 45%)
HSV	hsv(97, 73%, 71%)
CMYK	cmyk(45.3%, 0%, 72.9%, 29%)
CIE-LAB	lab(66.46, -47.40, 56.14)
CIE-LCH	lch(66.46, 73.47, 130.18°)
OKLab	oklab(69.5% -0.1318 0.1265)
OKLCH	oklch(69.5% 0.183 136.2)
XYZ	xyz(22.2232, 35.9208, 8.6675)
Luminance	0.3592 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B531 #8331B5

analogous

#A5B531 #63B531 #31B541

triadic

#63B531 #3163B5 #B53163

tetradic

#63B531 #31A5B5 #8331B5 #B54131

square

#63B531 #31A5B5 #8331B5 #B54131

split-complementary

#63B531 #4131B5 #B531A5

monochromatic

#2E5517 #498524 #63B531 #82D053 #A5DD83

Accessibility & contrast

On white

2.57

#63B531 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.18

#63B531 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B531

8.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B531	#FFFFFF	#000000	##000000
##63B531	1.00	2.57	8.18	8.18
#FFFFFF	2.57	1.00	21.00	21.00
#000000	8.18	21.00	1.00	1.00
##000000	8.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BBA619

Deuteranopia (green-blind)

#B09F3E

Tritanopia (blue-blind)

#60AE9B

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #63b531;
/* rgb */ color: rgb(99, 181, 49);
/* oklch */ color: oklch(69.5% 0.183 136.2);

Tailwind

colors: {
  custom: {
    50: '#96cc72',
    500: '#63b531',
    950: '#000000',
  },
}

SCSS

$custom: #63b531;
$custom-light: #96cc72;
$custom-dark: #000000;

JSON

{
  "hex": "#63b531",
  "rgb": {
    "r": 99,
    "g": 181,
    "b": 49
  },
  "hsl": {
    "h": 97.273,
    "s": 57.391,
    "l": 45.098
  },
  "oklch": {
    "l": 0.69502,
    "c": 0.18269,
    "h": 136.2
  },
  "luminance": 0.35922
}

Semantic roles & 50–950 ramp

primary

#63B531

secondary

#AA7BC7

accent

#47E1A7

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0E1308

muted

#7E827B

Preview Lab

Preview with #63B531

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

Preview Lab → · Contrast checker → · Palette generator →