#646D1B#646D1B

#646D1B is a mid, moderate yellow. Relative luminance 0.137; OKLCH L 51.1% C 0.104 H 115.6°. Best body text is #FFFFFF at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#646D1B
RGB	rgb(100, 109, 27)
HSL	hsl(67, 60%, 27%)
HSV	hsv(67, 75%, 43%)
CMYK	cmyk(8.3%, 0%, 75.2%, 57.3%)
CIE-LAB	lab(43.84, -14.83, 42.03)
CIE-LCH	lch(43.84, 44.57, 109.44°)
OKLab	oklab(51.08% -0.0448 0.0934)
OKLCH	oklch(51.08% 0.104 115.6)
XYZ	xyz(10.9223, 13.7259, 3.1107)
Luminance	0.1373 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646D1B #241B6D

analogous

#6D4D1B #646D1B #3B6D1B

triadic

#646D1B #1B646D #6D1B64

tetradic

#646D1B #1B6D4D #241B6D #6D1B3B

square

#646D1B #1B6D4D #241B6D #6D1B3B

split-complementary

#646D1B #1B3B6D #4D1B6D

monochromatic

#171906 #373C0F #646D1B #919E27 #BCCD35

Accessibility & contrast

On white

5.61

#646D1B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.75

#646D1B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646D1B

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646D1B	#FFFFFF	#000000	##FFFFFF
##646D1B	1.00	5.61	3.75	5.61
#FFFFFF	5.61	1.00	21.00	1.00
#000000	3.75	21.00	1.00	21.00
##FFFFFF	5.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#75670C

Deuteranopia (green-blind)

#746822

Tritanopia (blue-blind)

#6B665D

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #646d1b;
/* rgb */ color: rgb(100, 109, 27);
/* oklch */ color: oklch(51.1% 0.104 115.6);

Tailwind

colors: {
  custom: {
    50: '#93965e',
    500: '#646d1b',
    950: '#000000',
  },
}

SCSS

$custom: #646d1b;
$custom-light: #93965e;
$custom-dark: #000000;

JSON

{
  "hex": "#646d1b",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 27
  },
  "hsl": {
    "h": 66.585,
    "s": 60.294,
    "l": 26.667
  },
  "oklch": {
    "l": 0.51075,
    "c": 0.10358,
    "h": 115.6
  },
  "luminance": 0.13726
}

Semantic roles & 50–950 ramp

primary

#646D1B

secondary

#4C42A2

accent

#44E356

background

#F9F9F5

surface

#F2F2E9

border

#CCCCC5

text

#0D0D05

muted

#7E7E79

Preview Lab

Preview with #646D1B

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

Preview Lab → · Contrast checker → · Palette generator →