#666F17#666F17

#666F17 is a mid, moderate yellow. Relative luminance 0.143; OKLCH L 51.7% C 0.108 H 115.5°. Best body text is #FFFFFF at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#666F17
RGB	rgb(102, 111, 23)
HSL	hsl(66, 66%, 26%)
HSV	hsv(66, 79%, 44%)
CMYK	cmyk(8.1%, 0%, 79.3%, 56.5%)
CIE-LAB	lab(44.60, -15.20, 44.30)
CIE-LCH	lch(44.60, 46.84, 108.94°)
OKLab	oklab(51.72% -0.0463 0.0974)
OKLCH	oklch(51.72% 0.108 115.5)
XYZ	xyz(11.3189, 14.2557, 2.9658)
Luminance	0.1426 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666F17 #20176F

analogous

#6F4C17 #666F17 #3A6F17

triadic

#666F17 #17666F #6F1766

tetradic

#666F17 #176F4C #20176F #6F173A

square

#666F17 #176F4C #20176F #6F173A

split-complementary

#666F17 #173A6F #4C176F

monochromatic

#171905 #373C0C #666F17 #95A222 #C2D32D

Accessibility & contrast

On white

5.45

#666F17 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.85

#666F17 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666F17

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666F17	#FFFFFF	#000000	##FFFFFF
##666F17	1.00	5.45	3.85	5.45
#FFFFFF	5.45	1.00	21.00	1.00
#000000	3.85	21.00	1.00	21.00
##FFFFFF	5.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#776903

Deuteranopia (green-blind)

#776A1F

Tritanopia (blue-blind)

#6D685E

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #666f17;
/* rgb */ color: rgb(102, 111, 23);
/* oklch */ color: oklch(51.7% 0.108 115.5);

Tailwind

colors: {
  custom: {
    50: '#95985c',
    500: '#666f17',
    950: '#000000',
  },
}

SCSS

$custom: #666f17;
$custom-light: #95985c;
$custom-dark: #000000;

JSON

{
  "hex": "#666f17",
  "rgb": {
    "r": 102,
    "g": 111,
    "b": 23
  },
  "hsl": {
    "h": 66.136,
    "s": 65.672,
    "l": 26.275
  },
  "oklch": {
    "l": 0.51719,
    "c": 0.10783,
    "h": 115.5
  },
  "luminance": 0.14256
}

Semantic roles & 50–950 ramp

primary

#666F17

secondary

#483DA5

accent

#3FE951

background

#F9F9F5

surface

#F2F2E9

border

#CCCCC5

text

#0E0D04

muted

#7E7E79

Preview Lab

Preview with #666F17

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

Preview Lab → · Contrast checker → · Palette generator →