#666F37#666F37

#666F37 is a mid, moderate yellow. Relative luminance 0.145; OKLCH L 52.1% C 0.080 H 116.8°. Best body text is #FFFFFF at 5.39:1 contrast (WCAG AA passes).

Color values

HEX#666F37
RGBrgb(102, 111, 55)
HSLhsl(70, 34%, 33%)
HSVhsv(70, 50%, 44%)
CMYKcmyk(8.1%, 0%, 50.5%, 56.5%)
CIE-LABlab(44.90, -12.69, 29.82)
CIE-LCHlch(44.90, 32.41, 113.05°)
OKLaboklab(52.06% -0.0359 0.0711)
OKLCHoklch(52.06% 0.08 116.8)
XYZxyz(11.8536, 14.4696, 5.7821)
Luminance0.1447 (WCAG relative)
Temperaturewarm
Familyyellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#666F37 #40376F
analogous
#6F5C37 #666F37 #4A6F37
triadic
#666F37 #37666F #6F3766
tetradic
#666F37 #376F5C #40376F #6F374A
square
#666F37 #376F5C #40376F #6F374A
split-complementary
#666F37 #374A6F #5C376F
monochromatic
#1B1D0E #404623 #666F37 #8C984B #AAB66B

Accessibility & contrast

On white

5.39
#666F37 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.89
#666F37 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666F37
5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##666F37#FFFFFF#000000##FFFFFF
##666F371.005.393.895.39
#FFFFFF5.391.0021.001.00
#0000003.8921.001.0021.00
##FFFFFF5.391.0021.001.00

Color blindness preview

Protanopia (red-blind)
#766A32
Deuteranopia (green-blind)
#756B3A
Tritanopia (blue-blind)
#6B6A62
Achromatopsia (no color)
#6A6A6A

Design tokens & code

CSS
--color: #666f37;
/* rgb */ color: rgb(102, 111, 55);
/* oklch */ color: oklch(52.1% 0.080 116.8);
Tailwind
colors: {
  custom: {
    50: '#93986f',
    500: '#666f37',
    950: '#000000',
  },
}
SCSS
$custom: #666f37;
$custom-light: #93986f;
$custom-dark: #000000;
JSON
{
  "hex": "#666f37",
  "rgb": {
    "r": 102,
    "g": 111,
    "b": 55
  },
  "hsl": {
    "h": 69.643,
    "s": 33.735,
    "l": 32.549
  },
  "oklch": {
    "l": 0.52057,
    "c": 0.07966,
    "h": 116.8
  },
  "luminance": 0.14469
}

Semantic roles & 50–950 ramp

primary
#666F37
secondary
#6D639F
accent
#5ECA6F
background
#F9F9F6
surface
#F1F2EC
border
#CBCCC7
text
#0D0D07
muted
#7E7E7A

Preview Lab

Preview with #666F37

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

Preview Lab → · Contrast checker → · Palette generator →

#666F37 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva