#646D15#646D15

#646D15 is a mid, moderate yellow. Relative luminance 0.137; OKLCH L 51.0% C 0.107 H 115.5°. Best body text is #FFFFFF at 5.61:1 contrast (WCAG AA passes).

Color values

HEX#646D15
RGBrgb(100, 109, 21)
HSLhsl(66, 68%, 25%)
HSVhsv(66, 81%, 43%)
CMYKcmyk(8.3%, 0%, 80.7%, 57.3%)
CIE-LABlab(43.80, -15.14, 44.20)
CIE-LCHlch(43.80, 46.72, 108.91°)
OKLaboklab(51.04% -0.0462 0.0968)
OKLCHoklch(51.04% 0.107 115.5)
XYZxyz(10.8598, 13.7009, 2.7818)
Luminance0.1370 (WCAG relative)
Temperaturewarm
Familyyellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#646D15 #1E156D
analogous
#6D4A15 #646D15 #386D15
triadic
#646D15 #15646D #6D1564
tetradic
#646D15 #156D4A #1E156D #6D1538
square
#646D15 #156D4A #1E156D #6D1538
split-complementary
#646D15 #15386D #4A156D
monochromatic
#181A05 #353A0B #646D15 #93A01F #C2D429

Accessibility & contrast

On white

5.61
#646D15 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.74
#646D15 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646D15
5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##646D15#FFFFFF#000000##FFFFFF
##646D151.005.613.745.61
#FFFFFF5.611.0021.001.00
#0000003.7421.001.0021.00
##FFFFFF5.611.0021.001.00

Color blindness preview

Protanopia (red-blind)
#756700
Deuteranopia (green-blind)
#75681D
Tritanopia (blue-blind)
#6B665D
Achromatopsia (no color)
#676767

Design tokens & code

CSS
--color: #646d15;
/* rgb */ color: rgb(100, 109, 21);
/* oklch */ color: oklch(51.0% 0.107 115.5);
Tailwind
colors: {
  custom: {
    50: '#93965b',
    500: '#646d15',
    950: '#000000',
  },
}
SCSS
$custom: #646d15;
$custom-light: #93965b;
$custom-dark: #000000;
JSON
{
  "hex": "#646d15",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 21
  },
  "hsl": {
    "h": 66.136,
    "s": 67.692,
    "l": 25.49
  },
  "oklch": {
    "l": 0.51035,
    "c": 0.1073,
    "h": 115.5
  },
  "luminance": 0.13701
}

Semantic roles & 50–950 ramp

primary
#646D15
secondary
#453AA3
accent
#3DEB4F
background
#F9F9F5
surface
#F2F2E9
border
#CCCCC5
text
#0D0D04
muted
#7E7E79

Preview Lab

Preview with #646D15

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

Preview Lab → · Contrast checker → · Palette generator →

#646D15 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva