#666B1F#666B1F

#666B1F is a mid, moderate yellow. Relative luminance 0.134; OKLCH L 50.8% C 0.098 H 113.0°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#666B1F
RGB	rgb(102, 107, 31)
HSL	hsl(64, 55%, 27%)
HSV	hsv(64, 71%, 42%)
CMYK	cmyk(4.7%, 0%, 71%, 58%)
CIE-LAB	lab(43.42, -12.56, 40.02)
CIE-LCH	lch(43.42, 41.94, 107.43°)
OKLab	oklab(50.79% -0.0382 0.0898)
OKLCH	oklch(50.79% 0.098 113)
XYZ	xyz(10.9848, 13.4393, 3.3114)
Luminance	0.1344 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666B1F #241F6B

analogous

#6B4A1F #666B1F #406B1F

triadic

#666B1F #1F666B #6B1F66

tetradic

#666B1F #1F6B4A #241F6B #6B1F40

square

#666B1F #1F6B4A #241F6B #6B1F40

split-complementary

#666B1F #1F406B #4A1F6B

monochromatic

#171807 #393C11 #666B1F #939A2D #BEC73D

Accessibility & contrast

On white

5.69

#666B1F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#666B1F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666B1F

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666B1F	#FFFFFF	#000000	##FFFFFF
##666B1F	1.00	5.69	3.69	5.69
#FFFFFF	5.69	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#736614

Deuteranopia (green-blind)

#736724

Tritanopia (blue-blind)

#6D645C

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #666b1f;
/* rgb */ color: rgb(102, 107, 31);
/* oklch */ color: oklch(50.8% 0.098 113.0);

Tailwind

colors: {
  custom: {
    50: '#949560',
    500: '#666b1f',
    950: '#000000',
  },
}

SCSS

$custom: #666b1f;
$custom-light: #949560;
$custom-dark: #000000;

JSON

{
  "hex": "#666b1f",
  "rgb": {
    "r": 102,
    "g": 107,
    "b": 31
  },
  "hsl": {
    "h": 63.947,
    "s": 55.072,
    "l": 27.059
  },
  "oklch": {
    "l": 0.5079,
    "c": 0.0976,
    "h": 113
  },
  "luminance": 0.13439
}

Semantic roles & 50–950 ramp

primary

#666B1F

secondary

#4C479F

accent

#49DE53

background

#F9F9F5

surface

#F2F1EA

border

#CCCBC6

text

#0D0D05

muted

#7E7E79

Preview Lab

Preview with #666B1F

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

Preview Lab → · Contrast checker → · Palette generator →