#646C1D#646C1D

#646C1D is a mid, moderate yellow. Relative luminance 0.135; OKLCH L 50.8% C 0.101 H 115.1°. Best body text is #FFFFFF at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#646C1D
RGB	rgb(100, 108, 29)
HSL	hsl(66, 58%, 27%)
HSV	hsv(66, 73%, 42%)
CMYK	cmyk(7.4%, 0%, 73.1%, 57.6%)
CIE-LAB	lab(43.54, -14.17, 40.93)
CIE-LCH	lch(43.54, 43.31, 109.09°)
OKLab	oklab(50.84% -0.0428 0.0914)
OKLCH	oklch(50.84% 0.101 115.1)
XYZ	xyz(10.8401, 13.5233, 3.2014)
Luminance	0.1352 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646C1D #251D6C

analogous

#6C4D1D #646C1D #3D6C1D

triadic

#646C1D #1D646C #6C1D64

tetradic

#646C1D #1D6C4D #251D6C #6C1D3D

square

#646C1D #1D6C4D #251D6C #6C1D3D

split-complementary

#646C1D #1D3D6C #4D1D6C

monochromatic

#161806 #373C10 #646C1D #919C2A #BBCA39

Accessibility & contrast

On white

5.67

#646C1D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.70

#646C1D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646C1D

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646C1D	#FFFFFF	#000000	##FFFFFF
##646C1D	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)

#746610

Deuteranopia (green-blind)

#746823

Tritanopia (blue-blind)

#6B655C

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #646c1d;
/* rgb */ color: rgb(100, 108, 29);
/* oklch */ color: oklch(50.8% 0.101 115.1);

Tailwind

colors: {
  custom: {
    50: '#93965f',
    500: '#646c1d',
    950: '#000000',
  },
}

SCSS

$custom: #646c1d;
$custom-light: #93965f;
$custom-dark: #000000;

JSON

{
  "hex": "#646c1d",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 29
  },
  "hsl": {
    "h": 66.076,
    "s": 57.664,
    "l": 26.863
  },
  "oklch": {
    "l": 0.50842,
    "c": 0.10094,
    "h": 115.1
  },
  "luminance": 0.13523
}

Semantic roles & 50–950 ramp

primary

#646C1D

secondary

#4E44A1

accent

#47E156

background

#F9F9F5

surface

#F2F1E9

border

#CCCBC5

text

#0D0D05

muted

#7E7E79

Preview Lab

Preview with #646C1D

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

Preview Lab → · Contrast checker → · Palette generator →