#666E18#666E18

#666E18 is a mid, moderate yellow. Relative luminance 0.140; OKLCH L 51.5% C 0.106 H 114.9°. Best body text is #FFFFFF at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#666E18
RGB	rgb(102, 110, 24)
HSL	hsl(66, 64%, 26%)
HSV	hsv(66, 78%, 43%)
CMYK	cmyk(7.3%, 0%, 78.2%, 56.9%)
CIE-LAB	lab(44.29, -14.61, 43.66)
CIE-LCH	lch(44.29, 46.04, 108.50°)
OKLab	oklab(51.48% -0.0446 0.0962)
OKLCH	oklch(51.48% 0.106 114.9)
XYZ	xyz(11.2206, 14.0428, 2.9834)
Luminance	0.1404 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666E18 #20186E

analogous

#6E4B18 #666E18 #3B6E18

triadic

#666E18 #18666E #6E1866

tetradic

#666E18 #186E4B #20186E #6E183B

square

#666E18 #186E4B #20186E #6E183B

split-complementary

#666E18 #183B6E #4B186E

monochromatic

#171905 #373C0D #666E18 #95A023 #C2D22F

Accessibility & contrast

On white

5.51

#666E18 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.81

#666E18 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666E18

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666E18	#FFFFFF	#000000	##FFFFFF
##666E18	1.00	5.51	3.81	5.51
#FFFFFF	5.51	1.00	21.00	1.00
#000000	3.81	21.00	1.00	21.00
##FFFFFF	5.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#766805

Deuteranopia (green-blind)

#76691F

Tritanopia (blue-blind)

#6D675E

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #666e18;
/* rgb */ color: rgb(102, 110, 24);
/* oklch */ color: oklch(51.5% 0.106 114.9);

Tailwind

colors: {
  custom: {
    50: '#94975c',
    500: '#666e18',
    950: '#000000',
  },
}

SCSS

$custom: #666e18;
$custom-light: #94975c;
$custom-dark: #000000;

JSON

{
  "hex": "#666e18",
  "rgb": {
    "r": 102,
    "g": 110,
    "b": 24
  },
  "hsl": {
    "h": 65.581,
    "s": 64.179,
    "l": 26.275
  },
  "oklch": {
    "l": 0.51477,
    "c": 0.10604,
    "h": 114.9
  },
  "luminance": 0.14043
}

Semantic roles & 50–950 ramp

primary

#666E18

secondary

#483EA4

accent

#41E750

background

#F9F9F5

surface

#F2F2E9

border

#CCCCC5

text

#0E0D04

muted

#7E7E79

Preview Lab

Preview with #666E18

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

Preview Lab → · Contrast checker → · Palette generator →