#646A56#646A56

#646A56 is a mid, muted yellow-green. Relative luminance 0.137; OKLCH L 51.3% C 0.031 H 121.1°. Best body text is #FFFFFF at 5.62:1 contrast (WCAG AA passes).

Color values

HEX	#646A56
RGB	rgb(100, 106, 86)
HSL	hsl(78, 10%, 38%)
HSV	hsv(78, 19%, 42%)
CMYK	cmyk(5.7%, 0%, 18.9%, 58.4%)
CIE-LAB	lab(43.78, -6.24, 10.47)
CIE-LCH	lch(43.78, 12.19, 120.78°)
OKLab	oklab(51.31% -0.0162 0.0269)
OKLCH	oklch(51.31% 0.031 121.1)
XYZ	xyz(12.0891, 13.6893, 10.8077)
Luminance	0.1369 (WCAG relative)
Temperature	neutral
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646A56 #5C566A

analogous

#6A6656 #646A56 #5A6A56

triadic

#646A56 #56646A #6A5664

tetradic

#646A56 #566A66 #5C566A #6A565A

square

#646A56 #566A66 #5C566A #6A565A

split-complementary

#646A56 #565A6A #66566A

monochromatic

#24261F #44483B #646A56 #848C71 #A1A793

Accessibility & contrast

On white

5.62

#646A56 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.74

#646A56 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646A56

5.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646A56	#FFFFFF	#000000	##FFFFFF
##646A56	1.00	5.62	3.74	5.62
#FFFFFF	5.62	1.00	21.00	1.00
#000000	3.74	21.00	1.00	21.00
##FFFFFF	5.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D6855

Deuteranopia (green-blind)

#6C6857

Tritanopia (blue-blind)

#666864

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #646a56;
/* rgb */ color: rgb(100, 106, 86);
/* oklch */ color: oklch(51.3% 0.031 121.1);

Tailwind

colors: {
  custom: {
    50: '#909485',
    500: '#646a56',
    950: '#000000',
  },
}

SCSS

$custom: #646a56;
$custom-light: #909485;
$custom-dark: #000000;

JSON

{
  "hex": "#646a56",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 86
  },
  "hsl": {
    "h": 78,
    "s": 10.417,
    "l": 37.647
  },
  "oklch": {
    "l": 0.51313,
    "c": 0.03141,
    "h": 121.1
  },
  "luminance": 0.13689
}

Semantic roles & 50–950 ramp

primary

#646A56

secondary

#8B8696

accent

#74B387

background

#F8F9F8

surface

#F0F1EF

border

#CBCBCA

text

#0C0D0B

muted

#7D7E7C

Preview Lab

Preview with #646A56

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

Preview Lab → · Contrast checker → · Palette generator →