#666B23#666B23

#666B23 is a mid, moderate yellow. Relative luminance 0.135; OKLCH L 50.8% C 0.094 H 113.1°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#666B23
RGB	rgb(102, 107, 35)
HSL	hsl(64, 51%, 28%)
HSV	hsv(64, 67%, 42%)
CMYK	cmyk(4.7%, 0%, 67.3%, 58%)
CIE-LAB	lab(43.45, -12.29, 38.27)
CIE-LCH	lch(43.45, 40.20, 107.80°)
OKLab	oklab(50.83% -0.037 0.0868)
OKLCH	oklch(50.83% 0.094 113.1)
XYZ	xyz(11.0409, 13.4617, 3.6065)
Luminance	0.1346 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666B23 #28236B

analogous

#6B4C23 #666B23 #426B23

triadic

#666B23 #23666B #6B2366

tetradic

#666B23 #236B4C #28236B #6B2342

square

#666B23 #236B4C #28236B #6B2342

split-complementary

#666B23 #23426B #4C236B

monochromatic

#161708 #3A3D14 #666B23 #929932 #BAC246

Accessibility & contrast

On white

5.69

#666B23 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#666B23 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666B23

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666B23	#FFFFFF	#000000	##FFFFFF
##666B23	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)

#73661A

Deuteranopia (green-blind)

#736728

Tritanopia (blue-blind)

#6D655C

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #666b23;
/* rgb */ color: rgb(102, 107, 35);
/* oklch */ color: oklch(50.8% 0.094 113.1);

Tailwind

colors: {
  custom: {
    50: '#949562',
    500: '#666b23',
    950: '#000000',
  },
}

SCSS

$custom: #666b23;
$custom-light: #949562;
$custom-dark: #000000;

JSON

{
  "hex": "#666b23",
  "rgb": {
    "r": 102,
    "g": 107,
    "b": 35
  },
  "hsl": {
    "h": 64.167,
    "s": 50.704,
    "l": 27.843
  },
  "oklch": {
    "l": 0.50827,
    "c": 0.09437,
    "h": 113.1
  },
  "luminance": 0.13462
}

Semantic roles & 50–950 ramp

primary

#666B23

secondary

#514B9E

accent

#4EDA57

background

#F9F9F5

surface

#F2F1EA

border

#CCCBC6

text

#0D0D05

muted

#7E7E79

Preview Lab

Preview with #666B23

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

Preview Lab → · Contrast checker → · Palette generator →