#646E7E#646E7E

#646E7E is a mid, muted blue. Relative luminance 0.154; OKLCH L 53.6% C 0.028 H 259.8°. Best body text is #FFFFFF at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#646E7E
RGB	rgb(100, 110, 126)
HSL	hsl(217, 12%, 44%)
HSV	hsv(217, 21%, 49%)
CMYK	cmyk(20.6%, 12.7%, 0%, 50.6%)
CIE-LAB	lab(46.13, -0.06, -10.11)
CIE-LCH	lch(46.13, 10.11, 269.67°)
OKLab	oklab(53.55% -0.005 -0.0275)
OKLCH	oklch(53.55% 0.028 259.8)
XYZ	xyz(14.5964, 15.3672, 21.9318)
Luminance	0.1537 (WCAG relative)
Temperature	neutral
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646E7E #7E7464

analogous

#647B7E #646E7E #67647E

triadic

#646E7E #7E646E #6E7E64

tetradic

#646E7E #7E647B #7E7464 #647E67

square

#646E7E #7E647B #7E7464 #647E67

split-complementary

#646E7E #7E6764 #7B7E64

monochromatic

#2E323A #49505C #646E7E #838D9C #A5ACB7

Accessibility & contrast

On white

5.16

#646E7E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.07

#646E7E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646E7E

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646E7E	#FFFFFF	#000000	##FFFFFF
##646E7E	1.00	5.16	4.07	5.16
#FFFFFF	5.16	1.00	21.00	1.00
#000000	4.07	21.00	1.00	21.00
##FFFFFF	5.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#696F7F

Deuteranopia (green-blind)

#666C7E

Tritanopia (blue-blind)

#5E7173

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #646e7e;
/* rgb */ color: rgb(100, 110, 126);
/* oklch */ color: oklch(53.6% 0.028 259.8);

Tailwind

colors: {
  custom: {
    50: '#9097a3',
    500: '#646e7e',
    950: '#000000',
  },
}

SCSS

$custom: #646e7e;
$custom-light: #9097a3;
$custom-dark: #000000;

JSON

{
  "hex": "#646e7e",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 126
  },
  "hsl": {
    "h": 216.923,
    "s": 11.504,
    "l": 44.314
  },
  "oklch": {
    "l": 0.53553,
    "c": 0.02792,
    "h": 259.8
  },
  "luminance": 0.15368
}

Semantic roles & 50–950 ramp

primary

#646E7E

secondary

#A7A197

accent

#9B73B4

background

#F8F9FA

surface

#F0F2F3

border

#CBCCCD

text

#0C0D0F

muted

#7D7E7F

Preview Lab

Preview with #646E7E

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

Preview Lab → · Contrast checker → · Palette generator →