#666F1F#666F1F

#666F1F is a mid, moderate yellow. Relative luminance 0.143; OKLCH L 51.8% C 0.103 H 115.6°. Best body text is #FFFFFF at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#666F1F
RGB	rgb(102, 111, 31)
HSL	hsl(67, 56%, 28%)
HSV	hsv(67, 72%, 44%)
CMYK	cmyk(8.1%, 0%, 72.1%, 56.5%)
CIE-LAB	lab(44.65, -14.76, 41.26)
CIE-LCH	lch(44.65, 43.82, 109.68°)
OKLab	oklab(51.78% -0.0443 0.0924)
OKLCH	oklch(51.78% 0.103 115.6)
XYZ	xyz(11.4115, 14.2928, 3.4537)
Luminance	0.1429 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666F1F #281F6F

analogous

#6F501F #666F1F #3E6F1F

triadic

#666F1F #1F666F #6F1F66

tetradic

#666F1F #1F6F50 #281F6F #6F1F3E

square

#666F1F #1F6F50 #281F6F #6F1F3E

split-complementary

#666F1F #1F3E6F #501F6F

monochromatic

#161807 #3A3F12 #666F1F #929F2C #BAC93F

Accessibility & contrast

On white

5.44

#666F1F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.86

#666F1F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666F1F

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666F1F	#FFFFFF	#000000	##FFFFFF
##666F1F	1.00	5.44	3.86	5.44
#FFFFFF	5.44	1.00	21.00	1.00
#000000	3.86	21.00	1.00	21.00
##FFFFFF	5.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#776912

Deuteranopia (green-blind)

#766A25

Tritanopia (blue-blind)

#6D685F

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #666f1f;
/* rgb */ color: rgb(102, 111, 31);
/* oklch */ color: oklch(51.8% 0.103 115.6);

Tailwind

colors: {
  custom: {
    50: '#949860',
    500: '#666f1f',
    950: '#000000',
  },
}

SCSS

$custom: #666f1f;
$custom-light: #949860;
$custom-dark: #000000;

JSON

{
  "hex": "#666f1f",
  "rgb": {
    "r": 102,
    "g": 111,
    "b": 31
  },
  "hsl": {
    "h": 66.75,
    "s": 56.338,
    "l": 27.843
  },
  "oklch": {
    "l": 0.51778,
    "c": 0.10251,
    "h": 115.6
  },
  "luminance": 0.14293
}

Semantic roles & 50–950 ramp

primary

#666F1F

secondary

#5147A3

accent

#48E059

background

#F9F9F5

surface

#F2F2EA

border

#CCCCC6

text

#0D0D05

muted

#7E7E79

Preview Lab

Preview with #666F1F

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

Preview Lab → · Contrast checker → · Palette generator →