#666F3F#666F3F

#666F3F is a mid, moderate yellow-green. Relative luminance 0.146; OKLCH L 52.2% C 0.070 H 117.6°. Best body text is #FFFFFF at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#666F3F
RGB	rgb(102, 111, 63)
HSL	hsl(71, 28%, 34%)
HSV	hsv(71, 43%, 44%)
CMYK	cmyk(8.1%, 0%, 43.2%, 56.5%)
CIE-LAB	lab(45.02, -11.74, 25.56)
CIE-LCH	lch(45.02, 28.12, 114.67°)
OKLab	oklab(52.19% -0.0325 0.0622)
OKLCH	oklch(52.19% 0.07 117.6)
XYZ	xyz(12.0612, 14.5526, 6.8752)
Luminance	0.1455 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666F3F #483F6F

analogous

#6F603F #666F3F #4E6F3F

triadic

#666F3F #3F666F #6F3F66

tetradic

#666F3F #3F6F60 #483F6F #6F3F4E

square

#666F3F #3F6F60 #483F6F #6F3F4E

split-complementary

#666F3F #3F4E6F #603F6F

monochromatic

#1E2113 #424829 #666F3F #8A9655 #A7B277

Accessibility & contrast

On white

5.37

#666F3F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.91

#666F3F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666F3F

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666F3F	#FFFFFF	#000000	##FFFFFF
##666F3F	1.00	5.37	3.91	5.37
#FFFFFF	5.37	1.00	21.00	1.00
#000000	3.91	21.00	1.00	21.00
##FFFFFF	5.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#756A3B

Deuteranopia (green-blind)

#746B41

Tritanopia (blue-blind)

#6B6A63

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #666f3f;
/* rgb */ color: rgb(102, 111, 63);
/* oklch */ color: oklch(52.2% 0.070 117.6);

Tailwind

colors: {
  custom: {
    50: '#929875',
    500: '#666f3f',
    950: '#000000',
  },
}

SCSS

$custom: #666f3f;
$custom-light: #929875;
$custom-dark: #000000;

JSON

{
  "hex": "#666f3f",
  "rgb": {
    "r": 102,
    "g": 111,
    "b": 63
  },
  "hsl": {
    "h": 71.25,
    "s": 27.586,
    "l": 34.118
  },
  "oklch": {
    "l": 0.52188,
    "c": 0.07013,
    "h": 117.6
  },
  "luminance": 0.14553
}

Semantic roles & 50–950 ramp

primary

#666F3F

secondary

#766D9C

accent

#64C476

background

#F9F9F7

surface

#F1F2ED

border

#CBCCC8

text

#0D0D08

muted

#7E7E7B

Preview Lab

Preview with #666F3F

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

Preview Lab → · Contrast checker → · Palette generator →