#666C17#666C17

#666C17 is a mid, moderate yellow. Relative luminance 0.136; OKLCH L 51.0% C 0.104 H 113.6°. Best body text is #FFFFFF at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#666C17
RGB	rgb(102, 108, 23)
HSL	hsl(64, 65%, 26%)
HSV	hsv(64, 79%, 42%)
CMYK	cmyk(5.6%, 0%, 78.7%, 57.6%)
CIE-LAB	lab(43.67, -13.56, 43.44)
CIE-LCH	lch(43.67, 45.51, 107.34°)
OKLab	oklab(50.98% -0.0418 0.0955)
OKLCH	oklch(50.98% 0.104 113.6)
XYZ	xyz(10.9970, 13.6120, 2.8585)
Luminance	0.1361 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666C17 #1D176C

analogous

#6C4717 #666C17 #3B6C17

triadic

#666C17 #17666C #6C1766

tetradic

#666C17 #176C47 #1D176C #6C173B

square

#666C17 #176C47 #1D176C #6C173B

split-complementary

#666C17 #173B6C #47176C

monochromatic

#181905 #363A0C #666C17 #969E22 #C5D12C

Accessibility & contrast

On white

5.64

#666C17 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.72

#666C17 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666C17

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666C17	#FFFFFF	#000000	##FFFFFF
##666C17	1.00	5.64	3.72	5.64
#FFFFFF	5.64	1.00	21.00	1.00
#000000	3.72	21.00	1.00	21.00
##FFFFFF	5.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#756604

Deuteranopia (green-blind)

#74681E

Tritanopia (blue-blind)

#6D655C

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #666c17;
/* rgb */ color: rgb(102, 108, 23);
/* oklch */ color: oklch(51.0% 0.104 113.6);

Tailwind

colors: {
  custom: {
    50: '#94955c',
    500: '#666c17',
    950: '#000000',
  },
}

SCSS

$custom: #666c17;
$custom-light: #94955c;
$custom-dark: #000000;

JSON

{
  "hex": "#666c17",
  "rgb": {
    "r": 102,
    "g": 108,
    "b": 23
  },
  "hsl": {
    "h": 64.235,
    "s": 64.885,
    "l": 25.686
  },
  "oklch": {
    "l": 0.50976,
    "c": 0.10428,
    "h": 113.6
  },
  "luminance": 0.13612
}

Semantic roles & 50–950 ramp

primary

#666C17

secondary

#443DA2

accent

#40E84C

background

#F9F9F5

surface

#F2F1E9

border

#CCCBC5

text

#0E0D04

muted

#7E7E79

Preview Lab

Preview with #666C17

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

Preview Lab → · Contrast checker → · Palette generator →