#646C22#646C22

#646C22 is a mid, moderate yellow. Relative luminance 0.136; OKLCH L 50.9% C 0.097 H 115.2°. Best body text is #FFFFFF at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#646C22
RGB	rgb(100, 108, 34)
HSL	hsl(66, 52%, 28%)
HSV	hsv(66, 69%, 42%)
CMYK	cmyk(7.4%, 0%, 68.5%, 57.6%)
CIE-LAB	lab(43.58, -13.84, 38.81)
CIE-LCH	lch(43.58, 41.20, 109.63°)
OKLab	oklab(50.89% -0.0413 0.0878)
OKLCH	oklch(50.89% 0.097 115.2)
XYZ	xyz(10.9071, 13.5501, 3.5539)
Luminance	0.1355 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646C22 #2A226C

analogous

#6C4F22 #646C22 #3F6C22

triadic

#646C22 #22646C #6C2264

tetradic

#646C22 #226C4F #2A226C #6C223F

square

#646C22 #226C4F #2A226C #6C223F

split-complementary

#646C22 #223F6C #4F226C

monochromatic

#161707 #393D13 #646C22 #8F9B31 #B6C444

Accessibility & contrast

On white

5.66

#646C22 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#646C22 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646C22

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646C22	#FFFFFF	#000000	##FFFFFF
##646C22	1.00	5.66	3.71	5.66
#FFFFFF	5.66	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#746618

Deuteranopia (green-blind)

#736827

Tritanopia (blue-blind)

#6B665D

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #646c22;
/* rgb */ color: rgb(100, 108, 34);
/* oklch */ color: oklch(50.9% 0.097 115.2);

Tailwind

colors: {
  custom: {
    50: '#929661',
    500: '#646c22',
    950: '#000000',
  },
}

SCSS

$custom: #646c22;
$custom-light: #929661;
$custom-dark: #000000;

JSON

{
  "hex": "#646c22",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 34
  },
  "hsl": {
    "h": 66.486,
    "s": 52.113,
    "l": 27.843
  },
  "oklch": {
    "l": 0.50886,
    "c": 0.09707,
    "h": 115.2
  },
  "luminance": 0.1355
}

Semantic roles & 50–950 ramp

primary

#646C22

secondary

#534AA0

accent

#4CDC5C

background

#F9F9F5

surface

#F1F1EA

border

#CBCBC6

text

#0D0D05

muted

#7E7E79

Preview Lab

Preview with #646C22

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

Preview Lab → · Contrast checker → · Palette generator →