#637D2D#637D2D

#637D2D is a mid, moderate yellow-green. Relative luminance 0.175; OKLCH L 55.2% C 0.111 H 125.2°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#637D2D
RGB	rgb(99, 125, 45)
HSL	hsl(80, 47%, 33%)
HSV	hsv(80, 64%, 49%)
CMYK	cmyk(20.8%, 0%, 64%, 51%)
CIE-LAB	lab(48.90, -22.42, 39.42)
CIE-LCH	lch(48.90, 45.35, 119.62°)
OKLab	oklab(55.18% -0.064 0.0908)
OKLCH	oklch(55.18% 0.111 125.2)
XYZ	xyz(12.9529, 17.5092, 5.1793)
Luminance	0.1751 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#637D2D #472D7D

analogous

#7D6F2D #637D2D #3B7D2D

triadic

#637D2D #2D637D #7D2D63

tetradic

#637D2D #2D7D6F #472D7D #7D2D3B

square

#637D2D #2D7D6F #472D7D #7D2D3B

split-complementary

#637D2D #2D3B7D #6F2D7D

monochromatic

#1C230D #3F501D #637D2D #87AA3D #A4C55F

Accessibility & contrast

On white

4.66

#637D2D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#637D2D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #637D2D

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##637D2D	#FFFFFF	#000000	##FFFFFF
##637D2D	1.00	4.66	4.50	4.66
#FFFFFF	4.66	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#847524

Deuteranopia (green-blind)

#807433

Tritanopia (blue-blind)

#67776C

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #637d2d;
/* rgb */ color: rgb(99, 125, 45);
/* oklch */ color: oklch(55.2% 0.111 125.2);

Tailwind

colors: {
  custom: {
    50: '#92a26a',
    500: '#637d2d',
    950: '#000000',
  },
}

SCSS

$custom: #637d2d;
$custom-light: #92a26a;
$custom-dark: #000000;

JSON

{
  "hex": "#637d2d",
  "rgb": {
    "r": 99,
    "g": 125,
    "b": 45
  },
  "hsl": {
    "h": 79.5,
    "s": 47.059,
    "l": 33.333
  },
  "oklch": {
    "l": 0.55176,
    "c": 0.11105,
    "h": 125.2
  },
  "luminance": 0.17509
}

Semantic roles & 50–950 ramp

primary

#637D2D

secondary

#755AAC

accent

#51D77D

background

#F9FAF6

surface

#F1F3EB

border

#CBCDC6

text

#0D0F07

muted

#7E7F7A

Preview Lab

Preview with #637D2D

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

Preview Lab → · Contrast checker → · Palette generator →