#646818#646818

#646818 is a mid, moderate yellow. Relative luminance 0.127; OKLCH L 49.8% C 0.100 H 112.4°. Best body text is #FFFFFF at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#646818
RGB	rgb(100, 104, 24)
HSL	hsl(63, 63%, 25%)
HSV	hsv(63, 77%, 41%)
CMYK	cmyk(3.8%, 0%, 76.9%, 59.2%)
CIE-LAB	lab(42.27, -12.24, 41.69)
CIE-LCH	lch(42.27, 43.45, 106.37°)
OKLab	oklab(49.81% -0.0379 0.0921)
OKLCH	oklch(49.81% 0.1 112.4)
XYZ	xyz(10.3710, 12.6761, 2.7644)
Luminance	0.1268 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646818 #1C1868

analogous

#684418 #646818 #3C6818

triadic

#646818 #186468 #681864

tetradic

#646818 #186844 #1C1868 #68183C

square

#646818 #186844 #1C1868 #68183C

split-complementary

#646818 #183C68 #441868

monochromatic

#181906 #34360D #646818 #949A23 #C4CB2F

Accessibility & contrast

On white

5.94

#646818 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#646818 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646818

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646818	#FFFFFF	#000000	##FFFFFF
##646818	1.00	5.94	3.54	5.94
#FFFFFF	5.94	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#706308

Deuteranopia (green-blind)

#71651E

Tritanopia (blue-blind)

#6B6159

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #646818;
/* rgb */ color: rgb(100, 104, 24);
/* oklch */ color: oklch(49.8% 0.100 112.4);

Tailwind

colors: {
  custom: {
    50: '#93935c',
    500: '#646818',
    950: '#000000',
  },
}

SCSS

$custom: #646818;
$custom-light: #93935c;
$custom-dark: #000000;

JSON

{
  "hex": "#646818",
  "rgb": {
    "r": 100,
    "g": 104,
    "b": 24
  },
  "hsl": {
    "h": 63,
    "s": 62.5,
    "l": 25.098
  },
  "oklch": {
    "l": 0.49814,
    "c": 0.09959,
    "h": 112.4
  },
  "luminance": 0.12676
}

Semantic roles & 50–950 ramp

primary

#646818

secondary

#433E9E

accent

#42E64A

background

#F9F8F5

surface

#F2F0E9

border

#CCCBC5

text

#0D0D04

muted

#7E7D79

Preview Lab

Preview with #646818

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

Preview Lab → · Contrast checker → · Palette generator →