#646C19#646C19

#646C19 is a mid, moderate yellow. Relative luminance 0.135; OKLCH L 50.8% C 0.104 H 115.0°. Best body text is #FFFFFF at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#646C19
RGB	rgb(100, 108, 25)
HSL	hsl(66, 62%, 26%)
HSV	hsv(66, 77%, 42%)
CMYK	cmyk(7.4%, 0%, 76.9%, 57.6%)
CIE-LAB	lab(43.51, -14.40, 42.49)
CIE-LCH	lch(43.51, 44.86, 108.72°)
OKLab	oklab(50.81% -0.0438 0.094)
OKLCH	oklch(50.81% 0.104 115)
XYZ	xyz(10.7939, 13.5048, 2.9576)
Luminance	0.1351 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646C19 #21196C

analogous

#6C4A19 #646C19 #3A6C19

triadic

#646C19 #19646C #6C1964

tetradic

#646C19 #196C4A #21196C #6C193A

square

#646C19 #196C4A #21196C #6C193A

split-complementary

#646C19 #193A6C #4A196C

monochromatic

#171906 #363A0D #646C19 #929E25 #C0CF30

Accessibility & contrast

On white

5.67

#646C19 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.70

#646C19 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646C19

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646C19	#FFFFFF	#000000	##FFFFFF
##646C19	1.00	5.67	3.70	5.67
#FFFFFF	5.67	1.00	21.00	1.00
#000000	3.70	21.00	1.00	21.00
##FFFFFF	5.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#746608

Deuteranopia (green-blind)

#746720

Tritanopia (blue-blind)

#6B655C

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #646c19;
/* rgb */ color: rgb(100, 108, 25);
/* oklch */ color: oklch(50.8% 0.104 115.0);

Tailwind

colors: {
  custom: {
    50: '#93965d',
    500: '#646c19',
    950: '#000000',
  },
}

SCSS

$custom: #646c19;
$custom-light: #93965d;
$custom-dark: #000000;

JSON

{
  "hex": "#646c19",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 25
  },
  "hsl": {
    "h": 65.783,
    "s": 62.406,
    "l": 26.078
  },
  "oklch": {
    "l": 0.50812,
    "c": 0.10369,
    "h": 115
  },
  "luminance": 0.13505
}

Semantic roles & 50–950 ramp

primary

#646C19

secondary

#493FA1

accent

#42E552

background

#F9F9F5

surface

#F2F1E9

border

#CCCBC5

text

#0D0D04

muted

#7E7E79

Preview Lab

Preview with #646C19

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

Preview Lab → · Contrast checker → · Palette generator →