#646C1A#646C1A

#646C1A is a mid, moderate yellow. Relative luminance 0.135; OKLCH L 50.8% C 0.103 H 115.0°. Best body text is #FFFFFF at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#646C1A
RGB	rgb(100, 108, 26)
HSL	hsl(66, 61%, 26%)
HSV	hsv(66, 76%, 42%)
CMYK	cmyk(7.4%, 0%, 75.9%, 57.6%)
CIE-LAB	lab(43.52, -14.34, 42.11)
CIE-LCH	lch(43.52, 44.49, 108.81°)
OKLab	oklab(50.82% -0.0436 0.0934)
OKLCH	oklch(50.82% 0.103 115)
XYZ	xyz(10.8048, 13.5092, 3.0154)
Luminance	0.1351 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646C1A #221A6C

analogous

#6C4B1A #646C1A #3B6C1A

triadic

#646C1A #1A646C #6C1A64

tetradic

#646C1A #1A6C4B #221A6C #6C1A3B

square

#646C1A #1A6C4B #221A6C #6C1A3B

split-complementary

#646C1A #1A3B6C #4B1A6C

monochromatic

#171906 #363B0E #646C1A #929D26 #BFCE33

Accessibility & contrast

On white

5.67

#646C1A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.70

#646C1A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646C1A

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646C1A	#FFFFFF	#000000	##FFFFFF
##646C1A	1.00	5.67	3.70	5.67
#FFFFFF	5.67	1.00	21.00	1.00
#000000	3.70	21.00	1.00	21.00
##FFFFFF	5.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#74660A

Deuteranopia (green-blind)

#746821

Tritanopia (blue-blind)

#6B655C

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #646c1a;
/* rgb */ color: rgb(100, 108, 26);
/* oklch */ color: oklch(50.8% 0.103 115.0);

Tailwind

colors: {
  custom: {
    50: '#93965d',
    500: '#646c1a',
    950: '#000000',
  },
}

SCSS

$custom: #646c1a;
$custom-light: #93965d;
$custom-dark: #000000;

JSON

{
  "hex": "#646c1a",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 26
  },
  "hsl": {
    "h": 65.854,
    "s": 61.194,
    "l": 26.275
  },
  "oklch": {
    "l": 0.50819,
    "c": 0.10303,
    "h": 115
  },
  "luminance": 0.13509
}

Semantic roles & 50–950 ramp

primary

#646C1A

secondary

#4A41A1

accent

#43E453

background

#F9F9F5

surface

#F2F1E9

border

#CCCBC5

text

#0D0D04

muted

#7E7E79

Preview Lab

Preview with #646C1A

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

Preview Lab → · Contrast checker → · Palette generator →