#646C16#646C16

#646C16 is a mid, moderate yellow. Relative luminance 0.135; OKLCH L 50.8% C 0.106 H 115.0°. Best body text is #FFFFFF at 5.68:1 contrast (WCAG AA passes).

Color values

HEX	#646C16
RGB	rgb(100, 108, 22)
HSL	hsl(66, 66%, 25%)
HSV	hsv(66, 80%, 42%)
CMYK	cmyk(7.4%, 0%, 79.6%, 57.6%)
CIE-LAB	lab(43.50, -14.55, 43.57)
CIE-LCH	lch(43.50, 45.94, 108.46°)
OKLab	oklab(50.79% -0.0445 0.0957)
OKLCH	oklch(50.79% 0.106 115)
XYZ	xyz(10.7632, 13.4926, 2.7962)
Luminance	0.1349 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646C16 #1E166C

analogous

#6C4916 #646C16 #396C16

triadic

#646C16 #16646C #6C1664

tetradic

#646C16 #166C49 #1E166C #6C1639

square

#646C16 #166C49 #1E166C #6C1639

split-complementary

#646C16 #16396C #49166C

monochromatic

#181905 #35390C #646C16 #939F20 #C2D22B

Accessibility & contrast

On white

5.68

#646C16 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.70

#646C16 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646C16

5.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646C16	#FFFFFF	#000000	##FFFFFF
##646C16	1.00	5.68	3.70	5.68
#FFFFFF	5.68	1.00	21.00	1.00
#000000	3.70	21.00	1.00	21.00
##FFFFFF	5.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#746602

Deuteranopia (green-blind)

#74671E

Tritanopia (blue-blind)

#6B655C

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #646c16;
/* rgb */ color: rgb(100, 108, 22);
/* oklch */ color: oklch(50.8% 0.106 115.0);

Tailwind

colors: {
  custom: {
    50: '#93965b',
    500: '#646c16',
    950: '#000000',
  },
}

SCSS

$custom: #646c16;
$custom-light: #93965b;
$custom-dark: #000000;

JSON

{
  "hex": "#646c16",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 22
  },
  "hsl": {
    "h": 65.581,
    "s": 66.154,
    "l": 25.49
  },
  "oklch": {
    "l": 0.50792,
    "c": 0.10554,
    "h": 115
  },
  "luminance": 0.13492
}

Semantic roles & 50–950 ramp

primary

#646C16

secondary

#453CA2

accent

#3FE94F

background

#F9F9F5

surface

#F2F1E9

border

#CCCBC5

text

#0D0D04

muted

#7E7E79

Preview Lab

Preview with #646C16

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

Preview Lab → · Contrast checker → · Palette generator →