#639923#639923

#639923 is a light, vivid yellow-green. Relative luminance 0.256; OKLCH L 62.2% C 0.156 H 131.6°. Best body text is #000000 at 6.11:1 contrast (WCAG AA passes).

Color values

HEX	#639923
RGB	rgb(99, 153, 35)
HSL	hsl(87, 63%, 37%)
HSV	hsv(87, 77%, 60%)
CMYK	cmyk(35.3%, 0%, 77.1%, 40%)
CIE-LAB	lab(57.61, -36.47, 52.39)
CIE-LCH	lch(57.61, 63.83, 124.85°)
OKLab	oklab(62.23% -0.1033 0.1165)
OKLCH	oklch(62.23% 0.156 131.6)
XYZ	xyz(16.8400, 25.5558, 5.6353)
Luminance	0.2556 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#639923 #592399

analogous

#999423 #639923 #289923

triadic

#639923 #236399 #992363

tetradic

#639923 #239994 #592399 #992328

square

#639923 #239994 #592399 #992328

split-complementary

#639923 #232899 #942399

monochromatic

#23350C #436718 #639923 #83CB2E #A1DA5D

Accessibility & contrast

On white

3.44

#639923 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.11

#639923 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #639923

6.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##639923	#FFFFFF	#000000	##000000
##639923	1.00	3.44	6.11	6.11
#FFFFFF	3.44	1.00	21.00	21.00
#000000	6.11	21.00	1.00	1.00
##000000	6.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A08D06

Deuteranopia (green-blind)

#98892F

Tritanopia (blue-blind)

#659283

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #639923;
/* rgb */ color: rgb(99, 153, 35);
/* oklch */ color: oklch(62.2% 0.156 131.6);

Tailwind

colors: {
  custom: {
    50: '#94b767',
    500: '#639923',
    950: '#000000',
  },
}

SCSS

$custom: #639923;
$custom-light: #94b767;
$custom-dark: #000000;

JSON

{
  "hex": "#639923",
  "rgb": {
    "r": 99,
    "g": 153,
    "b": 35
  },
  "hsl": {
    "h": 87.458,
    "s": 62.766,
    "l": 36.863
  },
  "oklch": {
    "l": 0.62234,
    "c": 0.15572,
    "h": 131.6
  },
  "luminance": 0.25556
}

Semantic roles & 50–950 ramp

primary

#639923

secondary

#8859BE

accent

#42E68D

background

#F9FBF6

surface

#F2F6EB

border

#CCD0C6

text

#0E1106

muted

#7E807A

Preview Lab

Preview with #639923

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

Preview Lab → · Contrast checker → · Palette generator →