#666D23#666D23

#666D23 is a mid, moderate yellow. Relative luminance 0.139; OKLCH L 51.3% C 0.097 H 114.4°. Best body text is #FFFFFF at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#666D23
RGB	rgb(102, 109, 35)
HSL	hsl(66, 51%, 28%)
HSV	hsv(66, 68%, 43%)
CMYK	cmyk(6.4%, 0%, 67.9%, 57.3%)
CIE-LAB	lab(44.07, -13.40, 38.92)
CIE-LCH	lch(44.07, 41.16, 108.99°)
OKLab	oklab(51.32% -0.0401 0.0882)
OKLCH	oklch(51.32% 0.097 114.4)
XYZ	xyz(11.2518, 13.8836, 3.6769)
Luminance	0.1388 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666D23 #2A236D

analogous

#6D4F23 #666D23 #416D23

triadic

#666D23 #23666D #6D2366

tetradic

#666D23 #236D4F #2A236D #6D2341

square

#666D23 #236D4F #2A236D #6D2341

split-complementary

#666D23 #23416D #4F236D

monochromatic

#161707 #3B3F14 #666D23 #919B32 #B8C447

Accessibility & contrast

On white

5.56

#666D23 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.78

#666D23 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666D23

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666D23	#FFFFFF	#000000	##FFFFFF
##666D23	1.00	5.56	3.78	5.56
#FFFFFF	5.56	1.00	21.00	1.00
#000000	3.78	21.00	1.00	21.00
##FFFFFF	5.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#756819

Deuteranopia (green-blind)

#756928

Tritanopia (blue-blind)

#6D675E

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #666d23;
/* rgb */ color: rgb(102, 109, 35);
/* oklch */ color: oklch(51.3% 0.097 114.4);

Tailwind

colors: {
  custom: {
    50: '#949662',
    500: '#666d23',
    950: '#000000',
  },
}

SCSS

$custom: #666d23;
$custom-light: #949662;
$custom-dark: #000000;

JSON

{
  "hex": "#666d23",
  "rgb": {
    "r": 102,
    "g": 109,
    "b": 35
  },
  "hsl": {
    "h": 65.676,
    "s": 51.389,
    "l": 28.235
  },
  "oklch": {
    "l": 0.51319,
    "c": 0.09687,
    "h": 114.4
  },
  "luminance": 0.13883
}

Semantic roles & 50–950 ramp

primary

#666D23

secondary

#544BA0

accent

#4DDB5A

background

#F9F9F6

surface

#F2F2EB

border

#CCCCC6

text

#0D0D05

muted

#7E7E7A

Preview Lab

Preview with #666D23

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

Preview Lab → · Contrast checker → · Palette generator →