#637F52#637F52

#637F52 is a mid, moderate yellow-green. Relative luminance 0.184; OKLCH L 56.3% C 0.074 H 134.2°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#637F52
RGB	rgb(99, 127, 82)
HSL	hsl(97, 22%, 41%)
HSV	hsv(97, 35%, 50%)
CMYK	cmyk(22%, 0%, 35.4%, 50.2%)
CIE-LAB	lab(50.03, -18.93, 21.29)
CIE-LCH	lch(50.03, 28.48, 131.64°)
OKLab	oklab(56.25% -0.0516 0.0531)
OKLCH	oklch(56.25% 0.074 134.2)
XYZ	xyz(14.2576, 18.4403, 10.7892)
Luminance	0.1844 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#637F52 #6E527F

analogous

#797F52 #637F52 #527F57

triadic

#637F52 #52637F #7F5263

tetradic

#637F52 #52797F #6E527F #7F5752

square

#637F52 #52797F #6E527F #7F5752

split-complementary

#637F52 #57527F #7F5279

monochromatic

#293522 #465A3A #637F52 #81A16D #A1B992

Accessibility & contrast

On white

4.48

#637F52 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#637F52 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #637F52

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##637F52	#FFFFFF	#000000	##000000
##637F52	1.00	4.48	4.69	4.69
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#83794F

Deuteranopia (green-blind)

#7E7654

Tritanopia (blue-blind)

#637C73

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #637f52;
/* rgb */ color: rgb(99, 127, 82);
/* oklch */ color: oklch(56.3% 0.074 134.2);

Tailwind

colors: {
  custom: {
    50: '#90a483',
    500: '#637f52',
    950: '#000000',
  },
}

SCSS

$custom: #637f52;
$custom-light: #90a483;
$custom-dark: #000000;

JSON

{
  "hex": "#637f52",
  "rgb": {
    "r": 99,
    "g": 127,
    "b": 82
  },
  "hsl": {
    "h": 97.333,
    "s": 21.531,
    "l": 40.98
  },
  "oklch": {
    "l": 0.56253,
    "c": 0.07401,
    "h": 134.2
  },
  "luminance": 0.18441
}

Semantic roles & 50–950 ramp

primary

#637F52

secondary

#9A87A6

accent

#6ABE9E

background

#F8FAF8

surface

#F0F4EF

border

#CBCECA

text

#0C0F0A

muted

#7D7F7C

Preview Lab

Preview with #637F52

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

Preview Lab → · Contrast checker → · Palette generator →