#646D1D#646D1D

#646D1D is a mid, moderate yellow. Relative luminance 0.137; OKLCH L 51.1% C 0.102 H 115.7°. Best body text is #FFFFFF at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#646D1D
RGB	rgb(100, 109, 29)
HSL	hsl(67, 58%, 27%)
HSV	hsv(67, 73%, 43%)
CMYK	cmyk(8.3%, 0%, 73.4%, 57.3%)
CIE-LAB	lab(43.85, -14.71, 41.24)
CIE-LCH	lch(43.85, 43.78, 109.64°)
OKLab	oklab(51.09% -0.0443 0.0921)
OKLCH	oklch(51.09% 0.102 115.7)
XYZ	xyz(10.9462, 13.7355, 3.2367)
Luminance	0.1373 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646D1D #261D6D

analogous

#6D4E1D #646D1D #3C6D1D

triadic

#646D1D #1D646D #6D1D64

tetradic

#646D1D #1D6D4E #261D6D #6D1D3C

square

#646D1D #1D6D4E #261D6D #6D1D3C

split-complementary

#646D1D #1D3C6D #4E1D6D

monochromatic

#161806 #383D10 #646D1D #909D2A #BACB3A

Accessibility & contrast

On white

5.60

#646D1D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.75

#646D1D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646D1D

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646D1D	#FFFFFF	#000000	##FFFFFF
##646D1D	1.00	5.60	3.75	5.60
#FFFFFF	5.60	1.00	21.00	1.00
#000000	3.75	21.00	1.00	21.00
##FFFFFF	5.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#756710

Deuteranopia (green-blind)

#746823

Tritanopia (blue-blind)

#6B665D

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #646d1d;
/* rgb */ color: rgb(100, 109, 29);
/* oklch */ color: oklch(51.1% 0.102 115.7);

Tailwind

colors: {
  custom: {
    50: '#93965f',
    500: '#646d1d',
    950: '#000000',
  },
}

SCSS

$custom: #646d1d;
$custom-light: #93965f;
$custom-dark: #000000;

JSON

{
  "hex": "#646d1d",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 29
  },
  "hsl": {
    "h": 66.75,
    "s": 57.971,
    "l": 27.059
  },
  "oklch": {
    "l": 0.51091,
    "c": 0.10218,
    "h": 115.7
  },
  "luminance": 0.13735
}

Semantic roles & 50–950 ramp

primary

#646D1D

secondary

#4F44A2

accent

#47E158

background

#F9F9F5

surface

#F2F2E9

border

#CCCCC5

text

#0D0D05

muted

#7E7E79

Preview Lab

Preview with #646D1D

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

Preview Lab → · Contrast checker → · Palette generator →