#646C58#646C58

#646C58 is a mid, muted yellow-green. Relative luminance 0.141; OKLCH L 51.8% C 0.032 H 125.3°. Best body text is #FFFFFF at 5.49:1 contrast (WCAG AA passes).

Color values

HEX	#646C58
RGB	rgb(100, 108, 88)
HSL	hsl(84, 10%, 38%)
HSV	hsv(84, 19%, 42%)
CMYK	cmyk(7.4%, 0%, 18.5%, 57.6%)
CIE-LAB	lab(44.43, -7.03, 10.18)
CIE-LCH	lch(44.43, 12.38, 124.63°)
OKLab	oklab(51.84% -0.0185 0.0262)
OKLCH	oklch(51.84% 0.032 125.3)
XYZ	xyz(12.3793, 14.1390, 11.3076)
Luminance	0.1414 (WCAG relative)
Temperature	neutral
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646C58 #60586C

analogous

#6C6A58 #646C58 #5A6C58

triadic

#646C58 #58646C #6C5864

tetradic

#646C58 #586C6A #60586C #6C585A

square

#646C58 #586C6A #60586C #6C585A

split-complementary

#646C58 #585A6C #6A586C

monochromatic

#262921 #454A3D #646C58 #838D74 #A1A995

Accessibility & contrast

On white

5.49

#646C58 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.83

#646C58 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646C58

5.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646C58	#FFFFFF	#000000	##FFFFFF
##646C58	1.00	5.49	3.83	5.49
#FFFFFF	5.49	1.00	21.00	1.00
#000000	3.83	21.00	1.00	21.00
##FFFFFF	5.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E6957

Deuteranopia (green-blind)

#6D6959

Tritanopia (blue-blind)

#656A66

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #646c58;
/* rgb */ color: rgb(100, 108, 88);
/* oklch */ color: oklch(51.8% 0.032 125.3);

Tailwind

colors: {
  custom: {
    50: '#909687',
    500: '#646c58',
    950: '#000000',
  },
}

SCSS

$custom: #646c58;
$custom-light: #909687;
$custom-dark: #000000;

JSON

{
  "hex": "#646c58",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 88
  },
  "hsl": {
    "h": 84,
    "s": 10.204,
    "l": 38.431
  },
  "oklch": {
    "l": 0.51843,
    "c": 0.03207,
    "h": 125.3
  },
  "luminance": 0.14139
}

Semantic roles & 50–950 ramp

primary

#646C58

secondary

#8E8898

accent

#75B38E

background

#F8F9F8

surface

#F0F1EF

border

#CBCBCA

text

#0C0D0B

muted

#7D7E7C

Preview Lab

Preview with #646C58

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

Preview Lab → · Contrast checker → · Palette generator →