#639731#639731

#639731 is a mid, vivid yellow-green. Relative luminance 0.250; OKLCH L 61.8% C 0.144 H 132.4°. Best body text is #000000 at 6.00:1 contrast (WCAG AA passes).

Color values

HEX	#639731
RGB	rgb(99, 151, 49)
HSL	hsl(91, 51%, 39%)
HSV	hsv(91, 68%, 59%)
CMYK	cmyk(34.4%, 0%, 67.5%, 40.8%)
CIE-LAB	lab(57.08, -34.59, 46.47)
CIE-LCH	lch(57.08, 57.93, 126.67°)
OKLab	oklab(61.83% -0.0971 0.1062)
OKLCH	oklch(61.83% 0.144 132.4)
XYZ	xyz(16.7663, 25.0070, 6.8486)
Luminance	0.2501 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#639731 #653197

analogous

#969731 #639731 #319732

triadic

#639731 #316397 #973163

tetradic

#639731 #319697 #653197 #973231

square

#639731 #319697 #653197 #973231

split-complementary

#639731 #323197 #973196

monochromatic

#263B13 #456922 #639731 #81C243 #A0D171

Accessibility & contrast

On white

3.50

#639731 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.00

#639731 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #639731

6.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##639731	#FFFFFF	#000000	##000000
##639731	1.00	3.50	6.00	6.00
#FFFFFF	3.50	1.00	21.00	21.00
#000000	6.00	21.00	1.00	1.00
##000000	6.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9D8C23

Deuteranopia (green-blind)

#968839

Tritanopia (blue-blind)

#649182

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #639731;
/* rgb */ color: rgb(99, 151, 49);
/* oklch */ color: oklch(61.8% 0.144 132.4);

Tailwind

colors: {
  custom: {
    50: '#93b66e',
    500: '#639731',
    950: '#000000',
  },
}

SCSS

$custom: #639731;
$custom-light: #93b66e;
$custom-dark: #000000;

JSON

{
  "hex": "#639731",
  "rgb": {
    "r": 99,
    "g": 151,
    "b": 49
  },
  "hsl": {
    "h": 90.588,
    "s": 51,
    "l": 39.216
  },
  "oklch": {
    "l": 0.61832,
    "c": 0.14388,
    "h": 132.4
  },
  "luminance": 0.25008
}

Semantic roles & 50–950 ramp

primary

#639731

secondary

#936BB9

accent

#4DDA95

background

#F9FBF6

surface

#F2F6EC

border

#CCD0C7

text

#0D1107

muted

#7E807A

Preview Lab

Preview with #639731

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

Preview Lab → · Contrast checker → · Palette generator →