#646751#646751

#646751 is a mid, muted yellow. Relative luminance 0.130; OKLCH L 50.5% C 0.034 H 113.9°. Best body text is #FFFFFF at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#646751
RGB	rgb(100, 103, 81)
HSL	hsl(68, 12%, 36%)
HSV	hsv(68, 21%, 40%)
CMYK	cmyk(2.9%, 0%, 21.4%, 59.6%)
CIE-LAB	lab(42.77, -5.37, 12.06)
CIE-LCH	lch(42.77, 13.20, 113.99°)
OKLab	oklab(50.47% -0.0137 0.0308)
OKLCH	oklch(50.47% 0.034 113.9)
XYZ	xyz(11.5909, 13.0040, 9.6824)
Luminance	0.1300 (WCAG relative)
Temperature	neutral
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646751 #545167

analogous

#675F51 #646751 #596751

triadic

#646751 #516467 #675164

tetradic

#646751 #51675F #545167 #675159

square

#646751 #51675F #545167 #675159

split-complementary

#646751 #515967 #5F5167

monochromatic

#21221B #434536 #646751 #85896C #A2A58D

Accessibility & contrast

On white

5.83

#646751 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#646751 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646751

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646751	#FFFFFF	#000000	##FFFFFF
##646751	1.00	5.83	3.60	5.83
#FFFFFF	5.83	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A6550

Deuteranopia (green-blind)

#6A6552

Tritanopia (blue-blind)

#676461

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #646751;
/* rgb */ color: rgb(100, 103, 81);
/* oklch */ color: oklch(50.5% 0.034 113.9);

Tailwind

colors: {
  custom: {
    50: '#909282',
    500: '#646751',
    950: '#000000',
  },
}

SCSS

$custom: #646751;
$custom-light: #909282;
$custom-dark: #000000;

JSON

{
  "hex": "#646751",
  "rgb": {
    "r": 100,
    "g": 103,
    "b": 81
  },
  "hsl": {
    "h": 68.182,
    "s": 11.957,
    "l": 36.078
  },
  "oklch": {
    "l": 0.50471,
    "c": 0.03369,
    "h": 113.9
  },
  "luminance": 0.13004
}

Semantic roles & 50–950 ramp

primary

#646751

secondary

#838094

accent

#73B57C

background

#F8F8F7

surface

#F0F0EE

border

#CBCBC9

text

#0C0D0A

muted

#7D7D7C

Preview Lab

Preview with #646751

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

Preview Lab → · Contrast checker → · Palette generator →