#646A7A#646A7A

#646A7A is a mid, muted blue. Relative luminance 0.144; OKLCH L 52.5% C 0.026 H 269.2°. Best body text is #FFFFFF at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#646A7A
RGB	rgb(100, 106, 122)
HSL	hsl(224, 10%, 44%)
HSV	hsv(224, 18%, 48%)
CMYK	cmyk(18%, 13.1%, 0%, 52.2%)
CIE-LAB	lab(44.83, 1.36, -9.67)
CIE-LCH	lch(44.83, 9.76, 277.98°)
OKLab	oklab(52.49% -0.0004 -0.0262)
OKLCH	oklch(52.49% 0.026 269.2)
XYZ	xyz(13.9216, 14.4223, 20.4589)
Luminance	0.1442 (WCAG relative)
Temperature	neutral
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646A7A #7A7464

analogous

#64757A #646A7A #69647A

triadic

#646A7A #7A646A #6A7A64

tetradic

#646A7A #7A6475 #7A7464 #647A69

square

#646A7A #7A6475 #7A7464 #647A69

split-complementary

#646A7A #7A6964 #757A64

monochromatic

#2D3037 #484D58 #646A7A #828899 #A4A8B4

Accessibility & contrast

On white

5.41

#646A7A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.88

#646A7A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646A7A

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646A7A	#FFFFFF	#000000	##FFFFFF
##646A7A	1.00	5.41	3.88	5.41
#FFFFFF	5.41	1.00	21.00	1.00
#000000	3.88	21.00	1.00	21.00
##FFFFFF	5.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#656B7B

Deuteranopia (green-blind)

#64697A

Tritanopia (blue-blind)

#5F6D6F

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #646a7a;
/* rgb */ color: rgb(100, 106, 122);
/* oklch */ color: oklch(52.5% 0.026 269.2);

Tailwind

colors: {
  custom: {
    50: '#9094a0',
    500: '#646a7a',
    950: '#000000',
  },
}

SCSS

$custom: #646a7a;
$custom-light: #9094a0;
$custom-dark: #000000;

JSON

{
  "hex": "#646a7a",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 122
  },
  "hsl": {
    "h": 223.636,
    "s": 9.91,
    "l": 43.529
  },
  "oklch": {
    "l": 0.52487,
    "c": 0.02623,
    "h": 269.2
  },
  "luminance": 0.14423
}

Semantic roles & 50–950 ramp

primary

#646A7A

secondary

#A4A096

accent

#A275B3

background

#F8F9F9

surface

#F0F1F2

border

#CBCBCC

text

#0C0D0E

muted

#7D7E7E

Preview Lab

Preview with #646A7A

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

Preview Lab → · Contrast checker → · Palette generator →