#646A58#646A58

#646A58 is a mid, muted yellow-green. Relative luminance 0.137; OKLCH L 51.4% C 0.029 H 122.4°. Best body text is #FFFFFF at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#646A58
RGB	rgb(100, 106, 88)
HSL	hsl(80, 9%, 38%)
HSV	hsv(80, 17%, 42%)
CMYK	cmyk(5.7%, 0%, 17%, 58.4%)
CIE-LAB	lab(43.83, -5.88, 9.34)
CIE-LCH	lch(43.83, 11.04, 122.17°)
OKLab	oklab(51.37% -0.0153 0.0241)
OKLCH	oklch(51.37% 0.029 122.4)
XYZ	xyz(12.1708, 13.7220, 11.2380)
Luminance	0.1372 (WCAG relative)
Temperature	neutral
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646A58 #5E586A

analogous

#6A6758 #646A58 #5B6A58

triadic

#646A58 #58646A #6A5864

tetradic

#646A58 #586A67 #5E586A #6A585B

square

#646A58 #586A67 #5E586A #6A585B

split-complementary

#646A58 #585B6A #67586A

monochromatic

#252720 #44493C #646A58 #848B74 #A1A795

Accessibility & contrast

On white

5.61

#646A58 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.74

#646A58 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646A58

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646A58	#FFFFFF	#000000	##FFFFFF
##646A58	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)

#6C6857

Deuteranopia (green-blind)

#6C6859

Tritanopia (blue-blind)

#656865

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #646a58;
/* rgb */ color: rgb(100, 106, 88);
/* oklch */ color: oklch(51.4% 0.029 122.4);

Tailwind

colors: {
  custom: {
    50: '#909487',
    500: '#646a58',
    950: '#000000',
  },
}

SCSS

$custom: #646a58;
$custom-light: #909487;
$custom-dark: #000000;

JSON

{
  "hex": "#646a58",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 88
  },
  "hsl": {
    "h": 80,
    "s": 9.278,
    "l": 38.039
  },
  "oklch": {
    "l": 0.51367,
    "c": 0.02852,
    "h": 122.4
  },
  "luminance": 0.13722
}

Semantic roles & 50–950 ramp

primary

#646A58

secondary

#8C8896

accent

#76B28A

background

#F8F9F8

surface

#F0F1EF

border

#CBCBCA

text

#0C0D0B

muted

#7D7E7C

Preview Lab

Preview with #646A58

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

Preview Lab → · Contrast checker → · Palette generator →