#637740#637740

#637740 is a mid, moderate yellow-green. Relative luminance 0.162; OKLCH L 53.9% C 0.083 H 125.4°. Best body text is #FFFFFF at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#637740
RGB	rgb(99, 119, 64)
HSL	hsl(82, 30%, 36%)
HSV	hsv(82, 46%, 47%)
CMYK	cmyk(16.8%, 0%, 46.2%, 53.3%)
CIE-LAB	lab(47.26, -17.26, 27.77)
CIE-LCH	lch(47.26, 32.70, 121.86°)
OKLab	oklab(53.93% -0.0478 0.0672)
OKLCH	oklch(53.93% 0.083 125.4)
XYZ	xyz(12.6678, 16.2164, 7.3122)
Luminance	0.1622 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#637740 #544077

analogous

#776F40 #637740 #477740

triadic

#637740 #406377 #774063

tetradic

#637740 #40776F #544077 #774047

square

#637740 #40776F #544077 #774047

split-complementary

#637740 #404777 #6F4077

monochromatic

#212715 #424F2B #637740 #849F55 #A1B77A

Accessibility & contrast

On white

4.95

#637740 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.24

#637740 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #637740

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##637740	#FFFFFF	#000000	##FFFFFF
##637740	1.00	4.95	4.24	4.95
#FFFFFF	4.95	1.00	21.00	1.00
#000000	4.24	21.00	1.00	21.00
##FFFFFF	4.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C713C

Deuteranopia (green-blind)

#7A7043

Tritanopia (blue-blind)

#66726A

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #637740;
/* rgb */ color: rgb(99, 119, 64);
/* oklch */ color: oklch(53.9% 0.083 125.4);

Tailwind

colors: {
  custom: {
    50: '#909e76',
    500: '#637740',
    950: '#000000',
  },
}

SCSS

$custom: #637740;
$custom-light: #909e76;
$custom-dark: #000000;

JSON

{
  "hex": "#637740",
  "rgb": {
    "r": 99,
    "g": 119,
    "b": 64
  },
  "hsl": {
    "h": 81.818,
    "s": 30.055,
    "l": 35.882
  },
  "oklch": {
    "l": 0.53931,
    "c": 0.08252,
    "h": 125.4
  },
  "luminance": 0.16216
}

Semantic roles & 50–950 ramp

primary

#637740

secondary

#8371A2

accent

#62C686

background

#F8F9F7

surface

#F0F2ED

border

#CBCCC8

text

#0D0E08

muted

#7D7E7B

Preview Lab

Preview with #637740

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

Preview Lab → · Contrast checker → · Palette generator →