#666D16#666D16

#666D16 is a mid, moderate yellow. Relative luminance 0.138; OKLCH L 51.2% C 0.106 H 114.3°. Best body text is #FFFFFF at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#666D16
RGB	rgb(102, 109, 22)
HSL	hsl(65, 66%, 26%)
HSV	hsv(65, 80%, 43%)
CMYK	cmyk(6.4%, 0%, 79.8%, 57.3%)
CIE-LAB	lab(43.97, -14.16, 44.08)
CIE-LCH	lch(43.97, 46.29, 107.81°)
OKLab	oklab(51.22% -0.0436 0.0967)
OKLCH	oklch(51.22% 0.106 114.3)
XYZ	xyz(11.0933, 13.8202, 2.8421)
Luminance	0.1382 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666D16 #1D166D

analogous

#6D4816 #666D16 #3A6D16

triadic

#666D16 #16666D #6D1666

tetradic

#666D16 #166D48 #1D166D #6D163A

square

#666D16 #166D48 #1D166D #6D163A

split-complementary

#666D16 #163A6D #48166D

monochromatic

#181905 #363A0C #666D16 #96A020 #C5D32B

Accessibility & contrast

On white

5.58

#666D16 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#666D16 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666D16

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666D16	#FFFFFF	#000000	##FFFFFF
##666D16	1.00	5.58	3.76	5.58
#FFFFFF	5.58	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#766702

Deuteranopia (green-blind)

#75691E

Tritanopia (blue-blind)

#6D665D

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #666d16;
/* rgb */ color: rgb(102, 109, 22);
/* oklch */ color: oklch(51.2% 0.106 114.3);

Tailwind

colors: {
  custom: {
    50: '#95965b',
    500: '#666d16',
    950: '#000000',
  },
}

SCSS

$custom: #666d16;
$custom-light: #95965b;
$custom-dark: #000000;

JSON

{
  "hex": "#666d16",
  "rgb": {
    "r": 102,
    "g": 109,
    "b": 22
  },
  "hsl": {
    "h": 64.828,
    "s": 66.412,
    "l": 25.686
  },
  "oklch": {
    "l": 0.51217,
    "c": 0.10604,
    "h": 114.3
  },
  "luminance": 0.1382
}

Semantic roles & 50–950 ramp

primary

#666D16

secondary

#443CA3

accent

#3EE94C

background

#F9F9F5

surface

#F2F2E9

border

#CCCCC5

text

#0E0D04

muted

#7E7E79

Preview Lab

Preview with #666D16

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

Preview Lab → · Contrast checker → · Palette generator →