#666F19#666F19

#666F19 is a mid, moderate yellow. Relative luminance 0.143; OKLCH L 51.7% C 0.107 H 115.5°. Best body text is #FFFFFF at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#666F19
RGB	rgb(102, 111, 25)
HSL	hsl(66, 63%, 27%)
HSV	hsv(66, 77%, 44%)
CMYK	cmyk(8.1%, 0%, 77.5%, 56.5%)
CIE-LAB	lab(44.61, -15.10, 43.59)
CIE-LCH	lch(44.61, 46.13, 109.11°)
OKLab	oklab(51.73% -0.0459 0.0962)
OKLCH	oklch(51.73% 0.107 115.5)
XYZ	xyz(11.3397, 14.2640, 3.0754)
Luminance	0.1426 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666F19 #22196F

analogous

#6F4D19 #666F19 #3B6F19

triadic

#666F19 #19666F #6F1966

tetradic

#666F19 #196F4D #22196F #6F193B

square

#666F19 #196F4D #22196F #6F193B

split-complementary

#666F19 #193B6F #4D196F

monochromatic

#171906 #383D0E #666F19 #94A124 #C0D132

Accessibility & contrast

On white

5.45

#666F19 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.85

#666F19 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666F19

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666F19	#FFFFFF	#000000	##FFFFFF
##666F19	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)

#776907

Deuteranopia (green-blind)

#776A20

Tritanopia (blue-blind)

#6D685F

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #666f19;
/* rgb */ color: rgb(102, 111, 25);
/* oklch */ color: oklch(51.7% 0.107 115.5);

Tailwind

colors: {
  custom: {
    50: '#94985d',
    500: '#666f19',
    950: '#000000',
  },
}

SCSS

$custom: #666f19;
$custom-light: #94985d;
$custom-dark: #000000;

JSON

{
  "hex": "#666f19",
  "rgb": {
    "r": 102,
    "g": 111,
    "b": 25
  },
  "hsl": {
    "h": 66.279,
    "s": 63.235,
    "l": 26.667
  },
  "oklch": {
    "l": 0.51732,
    "c": 0.10661,
    "h": 115.5
  },
  "luminance": 0.14264
}

Semantic roles & 50–950 ramp

primary

#666F19

secondary

#4A3FA4

accent

#42E653

background

#F9F9F5

surface

#F2F2E9

border

#CCCCC5

text

#0E0D04

muted

#7E7E79

Preview Lab

Preview with #666F19

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

Preview Lab → · Contrast checker → · Palette generator →