#666F28#666F28

#666F28 is a mid, moderate yellow. Relative luminance 0.143; OKLCH L 51.9% C 0.095 H 115.9°. Best body text is #FFFFFF at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#666F28
RGB	rgb(102, 111, 40)
HSL	hsl(68, 47%, 30%)
HSV	hsv(68, 64%, 44%)
CMYK	cmyk(8.1%, 0%, 64%, 56.5%)
CIE-LAB	lab(44.73, -14.11, 37.30)
CIE-LCH	lch(44.73, 39.88, 110.73°)
OKLab	oklab(51.86% -0.0415 0.0855)
OKLCH	oklch(51.86% 0.095 115.9)
XYZ	xyz(11.5472, 14.3470, 4.1680)
Luminance	0.1435 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666F28 #31286F

analogous

#6F5528 #666F28 #426F28

triadic

#666F28 #28666F #6F2866

tetradic

#666F28 #286F55 #31286F #6F2842

square

#666F28 #286F55 #31286F #6F2842

split-complementary

#666F28 #28426F #55286F

monochromatic

#151608 #3D4218 #666F28 #8F9C38 #B2C051

Accessibility & contrast

On white

5.43

#666F28 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#666F28 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666F28

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666F28	#FFFFFF	#000000	##FFFFFF
##666F28	1.00	5.43	3.87	5.43
#FFFFFF	5.43	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#776920

Deuteranopia (green-blind)

#766A2D

Tritanopia (blue-blind)

#6C6960

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #666f28;
/* rgb */ color: rgb(102, 111, 40);
/* oklch */ color: oklch(51.9% 0.095 115.9);

Tailwind

colors: {
  custom: {
    50: '#949865',
    500: '#666f28',
    950: '#000000',
  },
}

SCSS

$custom: #666f28;
$custom-light: #949865;
$custom-dark: #000000;

JSON

{
  "hex": "#666f28",
  "rgb": {
    "r": 102,
    "g": 111,
    "b": 40
  },
  "hsl": {
    "h": 67.606,
    "s": 47.02,
    "l": 29.608
  },
  "oklch": {
    "l": 0.51864,
    "c": 0.09508,
    "h": 115.9
  },
  "luminance": 0.14347
}

Semantic roles & 50–950 ramp

primary

#666F28

secondary

#5C51A1

accent

#51D762

background

#F9F9F6

surface

#F2F2EB

border

#CCCCC6

text

#0D0D06

muted

#7E7E7A

Preview Lab

Preview with #666F28

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

Preview Lab → · Contrast checker → · Palette generator →