#637A41#637A41

#637A41 is a mid, moderate yellow-green. Relative luminance 0.170; OKLCH L 54.7% C 0.086 H 127.0°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#637A41
RGB	rgb(99, 122, 65)
HSL	hsl(84, 30%, 37%)
HSV	hsv(84, 47%, 48%)
CMYK	cmyk(18.9%, 0%, 46.7%, 52.2%)
CIE-LAB	lab(48.20, -18.72, 28.40)
CIE-LCH	lch(48.20, 34.02, 123.39°)
OKLab	oklab(54.69% -0.0519 0.0687)
OKLCH	oklch(54.69% 0.086 127)
XYZ	xyz(13.0592, 16.9532, 7.5843)
Luminance	0.1695 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#637A41 #58417A

analogous

#7A7541 #637A41 #477A41

triadic

#637A41 #41637A #7A4163

tetradic

#637A41 #417A75 #58417A #7A4147

square

#637A41 #417A75 #58417A #7A4147

split-complementary

#637A41 #41477A #75417A

monochromatic

#222A16 #43522C #637A41 #83A256 #A1B97C

Accessibility & contrast

On white

4.78

#637A41 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#637A41 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #637A41

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##637A41	#FFFFFF	#000000	##FFFFFF
##637A41	1.00	4.78	4.39	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F733C

Deuteranopia (green-blind)

#7C7244

Tritanopia (blue-blind)

#66756C

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #637a41;
/* rgb */ color: rgb(99, 122, 65);
/* oklch */ color: oklch(54.7% 0.086 127.0);

Tailwind

colors: {
  custom: {
    50: '#90a077',
    500: '#637a41',
    950: '#000000',
  },
}

SCSS

$custom: #637a41;
$custom-light: #90a077;
$custom-dark: #000000;

JSON

{
  "hex": "#637a41",
  "rgb": {
    "r": 99,
    "g": 122,
    "b": 65
  },
  "hsl": {
    "h": 84.211,
    "s": 30.481,
    "l": 36.667
  },
  "oklch": {
    "l": 0.54694,
    "c": 0.08609,
    "h": 127
  },
  "luminance": 0.16953
}

Semantic roles & 50–950 ramp

primary

#637A41

secondary

#8773A4

accent

#61C78A

background

#F8F9F7

surface

#F0F2ED

border

#CBCCC8

text

#0D0E08

muted

#7D7E7B

Preview Lab

Preview with #637A41

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

Preview Lab → · Contrast checker → · Palette generator →