#666F1B#666F1B

#666F1B is a mid, moderate yellow. Relative luminance 0.143; OKLCH L 51.7% C 0.105 H 115.5°. Best body text is #FFFFFF at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#666F1B
RGB	rgb(102, 111, 27)
HSL	hsl(66, 61%, 27%)
HSV	hsv(66, 76%, 44%)
CMYK	cmyk(8.1%, 0%, 75.7%, 56.5%)
CIE-LAB	lab(44.62, -14.99, 42.84)
CIE-LCH	lch(44.62, 45.39, 109.29°)
OKLab	oklab(51.75% -0.0454 0.095)
OKLCH	oklch(51.75% 0.105 115.5)
XYZ	xyz(11.3621, 14.2730, 3.1931)
Luminance	0.1427 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666F1B #241B6F

analogous

#6F4E1B #666F1B #3C6F1B

triadic

#666F1B #1B666F #6F1B66

tetradic

#666F1B #1B6F4E #241B6F #6F1B3C

square

#666F1B #1B6F4E #241B6F #6F1B3C

split-complementary

#666F1B #1B3C6F #4E1B6F

monochromatic

#171906 #393E0F #666F1B #93A027 #BECE36

Accessibility & contrast

On white

5.45

#666F1B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.85

#666F1B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666F1B

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666F1B	#FFFFFF	#000000	##FFFFFF
##666F1B	1.00	5.45	3.85	5.45
#FFFFFF	5.45	1.00	21.00	1.00
#000000	3.85	21.00	1.00	21.00
##FFFFFF	5.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#77690B

Deuteranopia (green-blind)

#776A22

Tritanopia (blue-blind)

#6D685F

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #666f1b;
/* rgb */ color: rgb(102, 111, 27);
/* oklch */ color: oklch(51.7% 0.105 115.5);

Tailwind

colors: {
  custom: {
    50: '#94985e',
    500: '#666f1b',
    950: '#000000',
  },
}

SCSS

$custom: #666f1b;
$custom-light: #94985e;
$custom-dark: #000000;

JSON

{
  "hex": "#666f1b",
  "rgb": {
    "r": 102,
    "g": 111,
    "b": 27
  },
  "hsl": {
    "h": 66.429,
    "s": 60.87,
    "l": 27.059
  },
  "oklch": {
    "l": 0.51746,
    "c": 0.10533,
    "h": 115.5
  },
  "luminance": 0.14273
}

Semantic roles & 50–950 ramp

primary

#666F1B

secondary

#4C42A4

accent

#44E455

background

#F9F9F5

surface

#F2F2E9

border

#CCCCC5

text

#0D0D05

muted

#7E7E79

Preview Lab

Preview with #666F1B

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

Preview Lab → · Contrast checker → · Palette generator →