#646B1D#646B1D

#646B1D is a mid, moderate yellow. Relative luminance 0.133; OKLCH L 50.6% C 0.100 H 114.4°. Best body text is #FFFFFF at 5.73:1 contrast (WCAG AA passes).

Color values

HEX	#646B1D
RGB	rgb(100, 107, 29)
HSL	hsl(65, 57%, 27%)
HSV	hsv(65, 73%, 42%)
CMYK	cmyk(6.5%, 0%, 72.9%, 58%)
CIE-LAB	lab(43.23, -13.62, 40.62)
CIE-LCH	lch(43.23, 42.84, 108.53°)
OKLab	oklab(50.59% -0.0412 0.0908)
OKLCH	oklch(50.59% 0.1 114.4)
XYZ	xyz(10.7353, 13.3136, 3.1664)
Luminance	0.1331 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646B1D #241D6B

analogous

#6B4B1D #646B1D #3D6B1D

triadic

#646B1D #1D646B #6B1D64

tetradic

#646B1D #1D6B4B #241D6B #6B1D3D

square

#646B1D #1D6B4B #241D6B #6B1D3D

split-complementary

#646B1D #1D3D6B #4B1D6B

monochromatic

#161807 #373B10 #646B1D #919B2A #BCC939

Accessibility & contrast

On white

5.73

#646B1D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#646B1D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646B1D

5.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646B1D	#FFFFFF	#000000	##FFFFFF
##646B1D	1.00	5.73	3.66	5.73
#FFFFFF	5.73	1.00	21.00	1.00
#000000	3.66	21.00	1.00	21.00
##FFFFFF	5.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#736510

Deuteranopia (green-blind)

#736723

Tritanopia (blue-blind)

#6B645C

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #646b1d;
/* rgb */ color: rgb(100, 107, 29);
/* oklch */ color: oklch(50.6% 0.100 114.4);

Tailwind

colors: {
  custom: {
    50: '#93955f',
    500: '#646b1d',
    950: '#000000',
  },
}

SCSS

$custom: #646b1d;
$custom-light: #93955f;
$custom-dark: #000000;

JSON

{
  "hex": "#646b1d",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 29
  },
  "hsl": {
    "h": 65.385,
    "s": 57.353,
    "l": 26.667
  },
  "oklch": {
    "l": 0.50594,
    "c": 0.09972,
    "h": 114.4
  },
  "luminance": 0.13313
}

Semantic roles & 50–950 ramp

primary

#646B1D

secondary

#4C44A0

accent

#47E155

background

#F9F9F5

surface

#F2F1E9

border

#CCCBC5

text

#0D0D05

muted

#7E7E79

Preview Lab

Preview with #646B1D

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

Preview Lab → · Contrast checker → · Palette generator →