#646C7E#646C7E

#646C7E is a mid, muted blue. Relative luminance 0.149; OKLCH L 53.1% C 0.030 H 266.4°. Best body text is #FFFFFF at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#646C7E
RGB	rgb(100, 108, 126)
HSL	hsl(222, 12%, 44%)
HSV	hsv(222, 21%, 49%)
CMYK	cmyk(20.6%, 14.3%, 0%, 50.6%)
CIE-LAB	lab(45.55, 1.13, -10.99)
CIE-LCH	lch(45.55, 11.04, 275.88°)
OKLab	oklab(53.1% -0.0019 -0.0299)
OKLCH	oklch(53.1% 0.03 266.4)
XYZ	xyz(14.3830, 14.9405, 21.8606)
Luminance	0.1494 (WCAG relative)
Temperature	neutral
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646C7E #7E7664

analogous

#64797E #646C7E #69647E

triadic

#646C7E #7E646C #6C7E64

tetradic

#646C7E #7E6479 #7E7664 #647E69

square

#646C7E #7E6479 #7E7664 #647E69

split-complementary

#646C7E #7E6964 #797E64

monochromatic

#2E323A #494F5C #646C7E #838B9C #A5ABB7

Accessibility & contrast

On white

5.27

#646C7E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.99

#646C7E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646C7E

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646C7E	#FFFFFF	#000000	##FFFFFF
##646C7E	1.00	5.27	3.99	5.27
#FFFFFF	5.27	1.00	21.00	1.00
#000000	3.99	21.00	1.00	21.00
##FFFFFF	5.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#676D7F

Deuteranopia (green-blind)

#646B7E

Tritanopia (blue-blind)

#5E6F72

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #646c7e;
/* rgb */ color: rgb(100, 108, 126);
/* oklch */ color: oklch(53.1% 0.030 266.4);

Tailwind

colors: {
  custom: {
    50: '#9096a3',
    500: '#646c7e',
    950: '#000000',
  },
}

SCSS

$custom: #646c7e;
$custom-light: #9096a3;
$custom-dark: #000000;

JSON

{
  "hex": "#646c7e",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 126
  },
  "hsl": {
    "h": 221.538,
    "s": 11.504,
    "l": 44.314
  },
  "oklch": {
    "l": 0.53097,
    "c": 0.02994,
    "h": 266.4
  },
  "luminance": 0.14941
}

Semantic roles & 50–950 ramp

primary

#646C7E

secondary

#A7A297

accent

#A073B4

background

#F8F9FA

surface

#F0F1F3

border

#CBCBCD

text

#0C0D0F

muted

#7D7E7F

Preview Lab

Preview with #646C7E

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

Preview Lab → · Contrast checker → · Palette generator →