#646A44#646A44

#646A44 is a mid, muted yellow. Relative luminance 0.134; OKLCH L 50.9% C 0.057 H 115.8°. Best body text is #FFFFFF at 5.70:1 contrast (WCAG AA passes).

Color values

HEX	#646A44
RGB	rgb(100, 106, 68)
HSL	hsl(69, 22%, 34%)
HSV	hsv(69, 36%, 42%)
CMYK	cmyk(5.7%, 0%, 35.8%, 58.4%)
CIE-LAB	lab(43.41, -9.12, 20.60)
CIE-LCH	lch(43.41, 22.53, 113.88°)
OKLab	oklab(50.9% -0.0246 0.051)
OKLCH	oklch(50.9% 0.057 115.8)
XYZ	xyz(11.4530, 13.4348, 7.4576)
Luminance	0.1343 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646A44 #4A446A

analogous

#6A5D44 #646A44 #516A44

triadic

#646A44 #44646A #6A4464

tetradic

#646A44 #446A5D #4A446A #6A4451

square

#646A44 #446A5D #4A446A #6A4451

split-complementary

#646A44 #44516A #5D446A

monochromatic

#1E1F14 #41452C #646A44 #878F5C #A4AC7D

Accessibility & contrast

On white

5.70

#646A44 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#646A44 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646A44

5.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646A44	#FFFFFF	#000000	##FFFFFF
##646A44	1.00	5.70	3.69	5.70
#FFFFFF	5.70	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F6641

Deuteranopia (green-blind)

#6F6746

Tritanopia (blue-blind)

#686660

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #646a44;
/* rgb */ color: rgb(100, 106, 68);
/* oklch */ color: oklch(50.9% 0.057 115.8);

Tailwind

colors: {
  custom: {
    50: '#909478',
    500: '#646a44',
    950: '#000000',
  },
}

SCSS

$custom: #646a44;
$custom-light: #909478;
$custom-dark: #000000;

JSON

{
  "hex": "#646a44",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 68
  },
  "hsl": {
    "h": 69.474,
    "s": 21.839,
    "l": 34.118
  },
  "oklch": {
    "l": 0.50895,
    "c": 0.05665,
    "h": 115.8
  },
  "luminance": 0.13435
}

Semantic roles & 50–950 ramp

primary

#646A44

secondary

#787298

accent

#69BE77

background

#F8F9F7

surface

#F0F1ED

border

#CBCBC8

text

#0C0D09

muted

#7D7E7B

Preview Lab

Preview with #646A44

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

Preview Lab → · Contrast checker → · Palette generator →