#666E1F#666E1F

#666E1F is a mid, moderate yellow. Relative luminance 0.141; OKLCH L 51.5% C 0.101 H 115.0°. Best body text is #FFFFFF at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#666E1F
RGB	rgb(102, 110, 31)
HSL	hsl(66, 56%, 28%)
HSV	hsv(66, 72%, 43%)
CMYK	cmyk(7.3%, 0%, 71.8%, 56.9%)
CIE-LAB	lab(44.34, -14.21, 40.95)
CIE-LCH	lch(44.34, 43.35, 109.14°)
OKLab	oklab(51.53% -0.0428 0.0918)
OKLCH	oklch(51.53% 0.101 115)
XYZ	xyz(11.3030, 14.0758, 3.4175)
Luminance	0.1408 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666E1F #271F6E

analogous

#6E4E1F #666E1F #3E6E1F

triadic

#666E1F #1F666E #6E1F66

tetradic

#666E1F #1F6E4E #271F6E #6E1F3E

square

#666E1F #1F6E4E #271F6E #6E1F3E

split-complementary

#666E1F #1F3E6E #4E1F6E

monochromatic

#161807 #3A3E12 #666E1F #929E2C #BBC93F

Accessibility & contrast

On white

5.50

#666E1F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.82

#666E1F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666E1F

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666E1F	#FFFFFF	#000000	##FFFFFF
##666E1F	1.00	5.50	3.82	5.50
#FFFFFF	5.50	1.00	21.00	1.00
#000000	3.82	21.00	1.00	21.00
##FFFFFF	5.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#766813

Deuteranopia (green-blind)

#766A25

Tritanopia (blue-blind)

#6D675E

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #666e1f;
/* rgb */ color: rgb(102, 110, 31);
/* oklch */ color: oklch(51.5% 0.101 115.0);

Tailwind

colors: {
  custom: {
    50: '#949760',
    500: '#666e1f',
    950: '#000000',
  },
}

SCSS

$custom: #666e1f;
$custom-light: #949760;
$custom-dark: #000000;

JSON

{
  "hex": "#666e1f",
  "rgb": {
    "r": 102,
    "g": 110,
    "b": 31
  },
  "hsl": {
    "h": 66.076,
    "s": 56.028,
    "l": 27.647
  },
  "oklch": {
    "l": 0.5153,
    "c": 0.10126,
    "h": 115
  },
  "luminance": 0.14076
}

Semantic roles & 50–950 ramp

primary

#666E1F

secondary

#5047A2

accent

#48DF58

background

#F9F9F5

surface

#F2F2EA

border

#CCCCC6

text

#0D0D05

muted

#7E7E79

Preview Lab

Preview with #666E1F

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

Preview Lab → · Contrast checker → · Palette generator →