#666A18#666A18

#666A18 is a mid, moderate yellow. Relative luminance 0.132; OKLCH L 50.5% C 0.101 H 112.3°. Best body text is #FFFFFF at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#666A18
RGB	rgb(102, 106, 24)
HSL	hsl(63, 63%, 25%)
HSV	hsv(63, 77%, 42%)
CMYK	cmyk(3.8%, 0%, 77.4%, 58.4%)
CIE-LAB	lab(43.06, -12.41, 42.50)
CIE-LCH	lch(43.06, 44.27, 106.28°)
OKLab	oklab(50.49% -0.0385 0.0937)
OKLCH	oklch(50.49% 0.101 112.3)
XYZ	xyz(10.7987, 13.1991, 2.8428)
Luminance	0.1320 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666A18 #1C186A

analogous

#6A4518 #666A18 #3D6A18

triadic

#666A18 #18666A #6A1866

tetradic

#666A18 #186A45 #1C186A #6A183D

square

#666A18 #186A45 #1C186A #6A183D

split-complementary

#666A18 #183D6A #45186A

monochromatic

#181906 #36380D #666A18 #969C23 #C6CE2F

Accessibility & contrast

On white

5.77

#666A18 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#666A18 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666A18

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666A18	#FFFFFF	#000000	##FFFFFF
##666A18	1.00	5.77	3.64	5.77
#FFFFFF	5.77	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#736507

Deuteranopia (green-blind)

#73671F

Tritanopia (blue-blind)

#6D635A

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #666a18;
/* rgb */ color: rgb(102, 106, 24);
/* oklch */ color: oklch(50.5% 0.101 112.3);

Tailwind

colors: {
  custom: {
    50: '#94945c',
    500: '#666a18',
    950: '#000000',
  },
}

SCSS

$custom: #666a18;
$custom-light: #94945c;
$custom-dark: #000000;

JSON

{
  "hex": "#666a18",
  "rgb": {
    "r": 102,
    "g": 106,
    "b": 24
  },
  "hsl": {
    "h": 62.927,
    "s": 63.077,
    "l": 25.49
  },
  "oklch": {
    "l": 0.50489,
    "c": 0.10133,
    "h": 112.3
  },
  "luminance": 0.13199
}

Semantic roles & 50–950 ramp

primary

#666A18

secondary

#433EA0

accent

#42E64A

background

#F9F9F5

surface

#F2F1E9

border

#CCCBC5

text

#0E0D04

muted

#7E7E79

Preview Lab

Preview with #666A18

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

Preview Lab → · Contrast checker → · Palette generator →