#647B23#647B23

#647B23 is a mid, moderate yellow-green. Relative luminance 0.170; OKLCH L 54.7% C 0.116 H 123.0°. Best body text is #FFFFFF at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#647B23
RGB	rgb(100, 123, 35)
HSL	hsl(76, 56%, 31%)
HSV	hsv(76, 72%, 48%)
CMYK	cmyk(18.7%, 0%, 71.5%, 51.8%)
CIE-LAB	lab(48.26, -21.74, 43.19)
CIE-LCH	lch(48.26, 48.35, 116.72°)
OKLab	oklab(54.65% -0.0631 0.0972)
OKLCH	oklch(54.65% 0.116 123)
XYZ	xyz(12.6420, 16.9965, 4.2044)
Luminance	0.1700 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647B23 #3A237B

analogous

#7B6623 #647B23 #387B23

triadic

#647B23 #23647B #7B2364

tetradic

#647B23 #237B66 #3A237B #7B2338

square

#647B23 #237B66 #3A237B #7B2338

split-complementary

#647B23 #23387B #66237B

monochromatic

#171C08 #3D4B15 #647B23 #8BAB31 #ABCC4C

Accessibility & contrast

On white

4.77

#647B23 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.40

#647B23 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #647B23

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647B23	#FFFFFF	#000000	##FFFFFF
##647B23	1.00	4.77	4.40	4.77
#FFFFFF	4.77	1.00	21.00	1.00
#000000	4.40	21.00	1.00	21.00
##FFFFFF	4.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#827315

Deuteranopia (green-blind)

#7F722A

Tritanopia (blue-blind)

#697569

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #647b23;
/* rgb */ color: rgb(100, 123, 35);
/* oklch */ color: oklch(54.7% 0.116 123.0);

Tailwind

colors: {
  custom: {
    50: '#93a164',
    500: '#647b23',
    950: '#000000',
  },
}

SCSS

$custom: #647b23;
$custom-light: #93a164;
$custom-dark: #000000;

JSON

{
  "hex": "#647b23",
  "rgb": {
    "r": 100,
    "g": 123,
    "b": 35
  },
  "hsl": {
    "h": 75.682,
    "s": 55.696,
    "l": 30.98
  },
  "oklch": {
    "l": 0.54651,
    "c": 0.11592,
    "h": 123
  },
  "luminance": 0.16997
}

Semantic roles & 50–950 ramp

primary

#647B23

secondary

#664CAE

accent

#49DF70

background

#F9F9F6

surface

#F2F2EB

border

#CCCCC6

text

#0D0F06

muted

#7E7E7A

Preview Lab

Preview with #647B23

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

Preview Lab → · Contrast checker → · Palette generator →