#646C17#646C17

#646C17 is a mid, moderate yellow. Relative luminance 0.135; OKLCH L 50.8% C 0.105 H 115.0°. Best body text is #FFFFFF at 5.68:1 contrast (WCAG AA passes).

Color values

HEX	#646C17
RGB	rgb(100, 108, 23)
HSL	hsl(66, 65%, 26%)
HSV	hsv(66, 79%, 42%)
CMYK	cmyk(7.4%, 0%, 78.7%, 57.6%)
CIE-LAB	lab(43.50, -14.50, 43.22)
CIE-LCH	lch(43.50, 45.59, 108.54°)
OKLab	oklab(50.8% -0.0443 0.0951)
OKLCH	oklch(50.8% 0.105 115)
XYZ	xyz(10.7731, 13.4965, 2.8480)
Luminance	0.1350 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646C17 #1F176C

analogous

#6C4917 #646C17 #396C17

triadic

#646C17 #17646C #6C1764

tetradic

#646C17 #176C49 #1F176C #6C1739

square

#646C17 #176C49 #1F176C #6C1739

split-complementary

#646C17 #17396C #49176C

monochromatic

#171905 #353A0C #646C17 #939E22 #C1D12C

Accessibility & contrast

On white

5.68

#646C17 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.70

#646C17 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646C17

5.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646C17	#FFFFFF	#000000	##FFFFFF
##646C17	1.00	5.68	3.70	5.68
#FFFFFF	5.68	1.00	21.00	1.00
#000000	3.70	21.00	1.00	21.00
##FFFFFF	5.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#746604

Deuteranopia (green-blind)

#74671E

Tritanopia (blue-blind)

#6B655C

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #646c17;
/* rgb */ color: rgb(100, 108, 23);
/* oklch */ color: oklch(50.8% 0.105 115.0);

Tailwind

colors: {
  custom: {
    50: '#93965c',
    500: '#646c17',
    950: '#000000',
  },
}

SCSS

$custom: #646c17;
$custom-light: #93965c;
$custom-dark: #000000;

JSON

{
  "hex": "#646c17",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 23
  },
  "hsl": {
    "h": 65.647,
    "s": 64.885,
    "l": 25.686
  },
  "oklch": {
    "l": 0.50798,
    "c": 0.10494,
    "h": 115
  },
  "luminance": 0.13496
}

Semantic roles & 50–950 ramp

primary

#646C17

secondary

#463DA2

accent

#40E850

background

#F9F9F5

surface

#F2F1E9

border

#CCCBC5

text

#0D0D04

muted

#7E7E79

Preview Lab

Preview with #646C17

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

Preview Lab → · Contrast checker → · Palette generator →