#666F37#666F37

#666F37 is a mid, moderate yellow. Relative luminance 0.145; OKLCH L 52.1% C 0.080 H 116.8°. Best body text is #FFFFFF at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#666F37
RGB	rgb(102, 111, 55)
HSL	hsl(70, 34%, 33%)
HSV	hsv(70, 50%, 44%)
CMYK	cmyk(8.1%, 0%, 50.5%, 56.5%)
CIE-LAB	lab(44.90, -12.69, 29.82)
CIE-LCH	lch(44.90, 32.41, 113.05°)
OKLab	oklab(52.06% -0.0359 0.0711)
OKLCH	oklch(52.06% 0.08 116.8)
XYZ	xyz(11.8536, 14.4696, 5.7821)
Luminance	0.1447 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666F37 #40376F

analogous

#6F5C37 #666F37 #4A6F37

triadic

#666F37 #37666F #6F3766

tetradic

#666F37 #376F5C #40376F #6F374A

square

#666F37 #376F5C #40376F #6F374A

split-complementary

#666F37 #374A6F #5C376F

monochromatic

#1B1D0E #404623 #666F37 #8C984B #AAB66B

Accessibility & contrast

On white

5.39

#666F37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.89

#666F37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666F37

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666F37	#FFFFFF	#000000	##FFFFFF
##666F37	1.00	5.39	3.89	5.39
#FFFFFF	5.39	1.00	21.00	1.00
#000000	3.89	21.00	1.00	21.00
##FFFFFF	5.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#766A32

Deuteranopia (green-blind)

#756B3A

Tritanopia (blue-blind)

#6B6A62

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #666f37;
/* rgb */ color: rgb(102, 111, 55);
/* oklch */ color: oklch(52.1% 0.080 116.8);

Tailwind

colors: {
  custom: {
    50: '#93986f',
    500: '#666f37',
    950: '#000000',
  },
}

SCSS

$custom: #666f37;
$custom-light: #93986f;
$custom-dark: #000000;

JSON

{
  "hex": "#666f37",
  "rgb": {
    "r": 102,
    "g": 111,
    "b": 55
  },
  "hsl": {
    "h": 69.643,
    "s": 33.735,
    "l": 32.549
  },
  "oklch": {
    "l": 0.52057,
    "c": 0.07966,
    "h": 116.8
  },
  "luminance": 0.14469
}

Semantic roles & 50–950 ramp

primary

#666F37

secondary

#6D639F

accent

#5ECA6F

background

#F9F9F6

surface

#F1F2EC

border

#CBCCC7

text

#0D0D07

muted

#7E7E7A

Preview Lab

Preview with #666F37

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

Preview Lab → · Contrast checker → · Palette generator →