#666D15#666D15

#666D15 is a mid, moderate yellow. Relative luminance 0.138; OKLCH L 51.2% C 0.107 H 114.2°. Best body text is #FFFFFF at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#666D15
RGB	rgb(102, 109, 21)
HSL	hsl(65, 68%, 25%)
HSV	hsv(65, 81%, 43%)
CMYK	cmyk(6.4%, 0%, 80.7%, 57.3%)
CIE-LAB	lab(43.97, -14.21, 44.41)
CIE-LCH	lch(43.97, 46.63, 107.74°)
OKLab	oklab(51.21% -0.0438 0.0972)
OKLCH	oklch(51.21% 0.107 114.2)
XYZ	xyz(11.0838, 13.8164, 2.7923)
Luminance	0.1382 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666D15 #1C156D

analogous

#6D4815 #666D15 #3A6D15

triadic

#666D15 #15666D #6D1566

tetradic

#666D15 #156D48 #1C156D #6D153A

square

#666D15 #156D48 #1C156D #6D153A

split-complementary

#666D15 #153A6D #48156D

monochromatic

#181A05 #363A0B #666D15 #96A01F #C6D429

Accessibility & contrast

On white

5.58

#666D15 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#666D15 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666D15

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666D15	#FFFFFF	#000000	##FFFFFF
##666D15	1.00	5.58	3.76	5.58
#FFFFFF	5.58	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#766700

Deuteranopia (green-blind)

#75691D

Tritanopia (blue-blind)

#6D665D

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #666d15;
/* rgb */ color: rgb(102, 109, 21);
/* oklch */ color: oklch(51.2% 0.107 114.2);

Tailwind

colors: {
  custom: {
    50: '#95965b',
    500: '#666d15',
    950: '#000000',
  },
}

SCSS

$custom: #666d15;
$custom-light: #95965b;
$custom-dark: #000000;

JSON

{
  "hex": "#666d15",
  "rgb": {
    "r": 102,
    "g": 109,
    "b": 21
  },
  "hsl": {
    "h": 64.773,
    "s": 67.692,
    "l": 25.49
  },
  "oklch": {
    "l": 0.51211,
    "c": 0.10661,
    "h": 114.2
  },
  "luminance": 0.13816
}

Semantic roles & 50–950 ramp

primary

#666D15

secondary

#433AA3

accent

#3DEB4B

background

#F9F9F5

surface

#F2F2E9

border

#CCCCC5

text

#0E0D04

muted

#7E7E79

Preview Lab

Preview with #666D15

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

Preview Lab → · Contrast checker → · Palette generator →