#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
RGB	rgb(100, 109, 21)
HSL	hsl(66, 68%, 25%)
HSV	hsv(66, 81%, 43%)
CMYK	cmyk(8.3%, 0%, 80.7%, 57.3%)
CIE-LAB	lab(43.80, -15.14, 44.20)
CIE-LCH	lch(43.80, 46.72, 108.91°)
OKLab	oklab(51.04% -0.0462 0.0968)
OKLCH	oklch(51.04% 0.107 115.5)
XYZ	xyz(10.8598, 13.7009, 2.7818)
Luminance	0.1370 (WCAG relative)
Temperature	warm
Family	yellow

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
##646D15	1.00	5.61	3.74	5.61
#FFFFFF	5.61	1.00	21.00	1.00
#000000	3.74	21.00	1.00	21.00
##FFFFFF	5.61	1.00	21.00	1.00

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 →