#666B37#666B37

#666B37 is a mid, moderate yellow. Relative luminance 0.136; OKLCH L 51.1% C 0.074 H 113.5°. Best body text is #FFFFFF at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#666B37
RGB	rgb(102, 107, 55)
HSL	hsl(66, 32%, 32%)
HSV	hsv(66, 49%, 42%)
CMYK	cmyk(4.7%, 0%, 48.6%, 58%)
CIE-LAB	lab(43.68, -10.46, 28.34)
CIE-LCH	lch(43.68, 30.21, 110.25°)
OKLab	oklab(51.08% -0.0295 0.0678)
OKLCH	oklch(51.08% 0.074 113.5)
XYZ	xyz(11.4269, 13.6162, 5.6399)
Luminance	0.1362 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666B37 #3C376B

analogous

#6B5637 #666B37 #4C6B37

triadic

#666B37 #37666B #6B3766

tetradic

#666B37 #376B56 #3C376B #6B374C

square

#666B37 #376B56 #3C376B #6B374C

split-complementary

#666B37 #374C6B #56376B

monochromatic

#191A0D #3F4322 #666B37 #8D934C #ABB26A

Accessibility & contrast

On white

5.64

#666B37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.72

#666B37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666B37

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666B37	#FFFFFF	#000000	##FFFFFF
##666B37	1.00	5.64	3.72	5.64
#FFFFFF	5.64	1.00	21.00	1.00
#000000	3.72	21.00	1.00	21.00
##FFFFFF	5.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#726733

Deuteranopia (green-blind)

#71683A

Tritanopia (blue-blind)

#6C665F

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #666b37;
/* rgb */ color: rgb(102, 107, 55);
/* oklch */ color: oklch(51.1% 0.074 113.5);

Tailwind

colors: {
  custom: {
    50: '#93956f',
    500: '#666b37',
    950: '#000000',
  },
}

SCSS

$custom: #666b37;
$custom-light: #93956f;
$custom-dark: #000000;

JSON

{
  "hex": "#666b37",
  "rgb": {
    "r": 102,
    "g": 107,
    "b": 55
  },
  "hsl": {
    "h": 65.769,
    "s": 32.099,
    "l": 31.765
  },
  "oklch": {
    "l": 0.51081,
    "c": 0.074,
    "h": 113.5
  },
  "luminance": 0.13616
}

Semantic roles & 50–950 ramp

primary

#666B37

secondary

#68629B

accent

#60C86A

background

#F9F9F6

surface

#F1F1EC

border

#CBCBC7

text

#0D0D07

muted

#7E7E7A

Preview Lab

Preview with #666B37

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

Preview Lab → · Contrast checker → · Palette generator →