#666E1B#666E1B

#666E1B is a mid, moderate yellow. Relative luminance 0.141; OKLCH L 51.5% C 0.104 H 114.9°. Best body text is #FFFFFF at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#666E1B
RGB	rgb(102, 110, 27)
HSL	hsl(66, 61%, 27%)
HSV	hsv(66, 75%, 43%)
CMYK	cmyk(7.3%, 0%, 75.5%, 56.9%)
CIE-LAB	lab(44.31, -14.45, 42.55)
CIE-LCH	lch(44.31, 44.93, 108.76°)
OKLab	oklab(51.5% -0.0439 0.0944)
OKLCH	oklch(51.5% 0.104 114.9)
XYZ	xyz(11.2536, 14.0560, 3.1569)
Luminance	0.1406 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666E1B #231B6E

analogous

#6E4D1B #666E1B #3D6E1B

triadic

#666E1B #1B666E #6E1B66

tetradic

#666E1B #1B6E4D #231B6E #6E1B3D

square

#666E1B #1B6E4D #231B6E #6E1B3D

split-complementary

#666E1B #1B3D6E #4D1B6E

monochromatic

#171906 #383D0F #666E1B #949F27 #BFCE36

Accessibility & contrast

On white

5.51

#666E1B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.81

#666E1B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666E1B

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666E1B	#FFFFFF	#000000	##FFFFFF
##666E1B	1.00	5.51	3.81	5.51
#FFFFFF	5.51	1.00	21.00	1.00
#000000	3.81	21.00	1.00	21.00
##FFFFFF	5.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#76680C

Deuteranopia (green-blind)

#766922

Tritanopia (blue-blind)

#6D675E

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #666e1b;
/* rgb */ color: rgb(102, 110, 27);
/* oklch */ color: oklch(51.5% 0.104 114.9);

Tailwind

colors: {
  custom: {
    50: '#94975e',
    500: '#666e1b',
    950: '#000000',
  },
}

SCSS

$custom: #666e1b;
$custom-light: #94975e;
$custom-dark: #000000;

JSON

{
  "hex": "#666e1b",
  "rgb": {
    "r": 102,
    "g": 110,
    "b": 27
  },
  "hsl": {
    "h": 65.783,
    "s": 60.584,
    "l": 26.863
  },
  "oklch": {
    "l": 0.51498,
    "c": 0.10411,
    "h": 114.9
  },
  "luminance": 0.14056
}

Semantic roles & 50–950 ramp

primary

#666E1B

secondary

#4B42A3

accent

#44E453

background

#F9F9F5

surface

#F2F2E9

border

#CCCCC5

text

#0D0D05

muted

#7E7E79

Preview Lab

Preview with #666E1B

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

Preview Lab → · Contrast checker → · Palette generator →