#666D1F#666D1F

#666D1F is a mid, moderate yellow. Relative luminance 0.139; OKLCH L 51.3% C 0.100 H 114.4°. Best body text is #FFFFFF at 5.57:1 contrast (WCAG AA passes).

Color values

HEX	#666D1F
RGB	rgb(102, 109, 31)
HSL	hsl(65, 56%, 27%)
HSV	hsv(65, 72%, 43%)
CMYK	cmyk(6.4%, 0%, 71.6%, 57.3%)
CIE-LAB	lab(44.03, -13.67, 40.64)
CIE-LCH	lch(44.03, 42.87, 108.59°)
OKLab	oklab(51.28% -0.0413 0.0911)
OKLCH	oklch(51.28% 0.1 114.4)
XYZ	xyz(11.1957, 13.8612, 3.3818)
Luminance	0.1386 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666D1F #261F6D

analogous

#6D4D1F #666D1F #3F6D1F

triadic

#666D1F #1F666D #6D1F66

tetradic

#666D1F #1F6D4D #261F6D #6D1F3F

square

#666D1F #1F6D4D #261F6D #6D1F3F

split-complementary

#666D1F #1F3F6D #4D1F6D

monochromatic

#161807 #393D11 #666D1F #939D2D #BCC83E

Accessibility & contrast

On white

5.57

#666D1F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.77

#666D1F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666D1F

5.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666D1F	#FFFFFF	#000000	##FFFFFF
##666D1F	1.00	5.57	3.77	5.57
#FFFFFF	5.57	1.00	21.00	1.00
#000000	3.77	21.00	1.00	21.00
##FFFFFF	5.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#756713

Deuteranopia (green-blind)

#756925

Tritanopia (blue-blind)

#6D665D

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #666d1f;
/* rgb */ color: rgb(102, 109, 31);
/* oklch */ color: oklch(51.3% 0.100 114.4);

Tailwind

colors: {
  custom: {
    50: '#949660',
    500: '#666d1f',
    950: '#000000',
  },
}

SCSS

$custom: #666d1f;
$custom-light: #949660;
$custom-dark: #000000;

JSON

{
  "hex": "#666d1f",
  "rgb": {
    "r": 102,
    "g": 109,
    "b": 31
  },
  "hsl": {
    "h": 65.385,
    "s": 55.714,
    "l": 27.451
  },
  "oklch": {
    "l": 0.51283,
    "c": 0.10003,
    "h": 114.4
  },
  "luminance": 0.13861
}

Semantic roles & 50–950 ramp

primary

#666D1F

secondary

#4F47A1

accent

#49DF56

background

#F9F9F5

surface

#F2F2EA

border

#CCCCC6

text

#0D0D05

muted

#7E7E79

Preview Lab

Preview with #666D1F

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

Preview Lab → · Contrast checker → · Palette generator →