#646B19#646B19

#646B19 is a mid, moderate yellow. Relative luminance 0.133; OKLCH L 50.6% C 0.102 H 114.4°. Best body text is #FFFFFF at 5.74:1 contrast (WCAG AA passes).

Color values

HEX	#646B19
RGB	rgb(100, 107, 25)
HSL	hsl(65, 62%, 26%)
HSV	hsv(65, 77%, 42%)
CMYK	cmyk(6.5%, 0%, 76.6%, 58%)
CIE-LAB	lab(43.20, -13.85, 42.19)
CIE-LCH	lch(43.20, 44.41, 108.17°)
OKLab	oklab(50.56% -0.0423 0.0934)
OKLCH	oklch(50.56% 0.102 114.4)
XYZ	xyz(10.6890, 13.2951, 2.9226)
Luminance	0.1330 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646B19 #20196B

analogous

#6B4919 #646B19 #3B6B19

triadic

#646B19 #19646B #6B1964

tetradic

#646B19 #196B49 #20196B #6B193B

square

#646B19 #196B49 #20196B #6B193B

split-complementary

#646B19 #193B6B #49196B

monochromatic

#171906 #36390D #646B19 #929D25 #C1CE30

Accessibility & contrast

On white

5.74

#646B19 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#646B19 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646B19

5.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646B19	#FFFFFF	#000000	##FFFFFF
##646B19	1.00	5.74	3.66	5.74
#FFFFFF	5.74	1.00	21.00	1.00
#000000	3.66	21.00	1.00	21.00
##FFFFFF	5.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#736509

Deuteranopia (green-blind)

#736720

Tritanopia (blue-blind)

#6B645B

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #646b19;
/* rgb */ color: rgb(100, 107, 25);
/* oklch */ color: oklch(50.6% 0.102 114.4);

Tailwind

colors: {
  custom: {
    50: '#93955c',
    500: '#646b19',
    950: '#000000',
  },
}

SCSS

$custom: #646b19;
$custom-light: #93955c;
$custom-dark: #000000;

JSON

{
  "hex": "#646b19",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 25
  },
  "hsl": {
    "h": 65.122,
    "s": 62.121,
    "l": 25.882
  },
  "oklch": {
    "l": 0.50564,
    "c": 0.10248,
    "h": 114.4
  },
  "luminance": 0.13295
}

Semantic roles & 50–950 ramp

primary

#646B19

secondary

#483FA1

accent

#43E550

background

#F9F9F5

surface

#F2F1E9

border

#CCCBC5

text

#0D0D04

muted

#7E7E79

Preview Lab

Preview with #646B19

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

Preview Lab → · Contrast checker → · Palette generator →