#646D19#646D19

#646D19 is a mid, moderate yellow. Relative luminance 0.137; OKLCH L 51.1% C 0.105 H 115.6°. Best body text is #FFFFFF at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#646D19
RGB	rgb(100, 109, 25)
HSL	hsl(66, 63%, 26%)
HSV	hsv(66, 77%, 43%)
CMYK	cmyk(8.3%, 0%, 77.1%, 57.3%)
CIE-LAB	lab(43.82, -14.94, 42.79)
CIE-LCH	lch(43.82, 45.32, 109.25°)
OKLab	oklab(51.06% -0.0453 0.0946)
OKLCH	oklch(51.06% 0.105 115.6)
XYZ	xyz(10.8999, 13.7170, 2.9930)
Luminance	0.1372 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646D19 #22196D

analogous

#6D4C19 #646D19 #3A6D19

triadic

#646D19 #19646D #6D1964

tetradic

#646D19 #196D4C #22196D #6D193A

square

#646D19 #196D4C #22196D #6D193A

split-complementary

#646D19 #193A6D #4C196D

monochromatic

#171906 #363B0E #646D19 #929F24 #BFD031

Accessibility & contrast

On white

5.61

#646D19 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.74

#646D19 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646D19

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646D19	#FFFFFF	#000000	##FFFFFF
##646D19	1.00	5.61	3.74	5.61
#FFFFFF	5.61	1.00	21.00	1.00
#000000	3.74	21.00	1.00	21.00
##FFFFFF	5.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#756708

Deuteranopia (green-blind)

#746820

Tritanopia (blue-blind)

#6B665D

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #646d19;
/* rgb */ color: rgb(100, 109, 25);
/* oklch */ color: oklch(51.1% 0.105 115.6);

Tailwind

colors: {
  custom: {
    50: '#93965d',
    500: '#646d19',
    950: '#000000',
  },
}

SCSS

$custom: #646d19;
$custom-light: #93965d;
$custom-dark: #000000;

JSON

{
  "hex": "#646d19",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 25
  },
  "hsl": {
    "h": 66.429,
    "s": 62.687,
    "l": 26.275
  },
  "oklch": {
    "l": 0.51061,
    "c": 0.1049,
    "h": 115.6
  },
  "luminance": 0.13717
}

Semantic roles & 50–950 ramp

primary

#646D19

secondary

#4A3FA2

accent

#42E654

background

#F9F9F5

surface

#F2F2E9

border

#CCCCC5

text

#0D0D04

muted

#7E7E79

Preview Lab

Preview with #646D19

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

Preview Lab → · Contrast checker → · Palette generator →