#646E7C#646E7C

#646E7C is a mid, muted blue. Relative luminance 0.153; OKLCH L 53.5% C 0.025 H 256.8°. Best body text is #FFFFFF at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#646E7C
RGB	rgb(100, 110, 124)
HSL	hsl(215, 11%, 44%)
HSV	hsv(215, 19%, 49%)
CMYK	cmyk(19.4%, 11.3%, 0%, 51.4%)
CIE-LAB	lab(46.06, -0.55, -9.02)
CIE-LCH	lch(46.06, 9.04, 266.54°)
OKLab	oklab(53.48% -0.0057 -0.0245)
OKLCH	oklch(53.48% 0.025 256.8)
XYZ	xyz(14.4686, 15.3161, 21.2589)
Luminance	0.1532 (WCAG relative)
Temperature	neutral
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646E7C #7C7264

analogous

#647A7C #646E7C #66647C

triadic

#646E7C #7C646E #6E7C64

tetradic

#646E7C #7C647A #7C7264 #647C66

square

#646E7C #7C647A #7C7264 #647C66

split-complementary

#646E7C #7C6664 #7A7C64

monochromatic

#2D3238 #49505A #646E7C #838D9B #A4ACB6

Accessibility & contrast

On white

5.17

#646E7C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.06

#646E7C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646E7C

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646E7C	#FFFFFF	#000000	##FFFFFF
##646E7C	1.00	5.17	4.06	5.17
#FFFFFF	5.17	1.00	21.00	1.00
#000000	4.06	21.00	1.00	21.00
##FFFFFF	5.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#696E7D

Deuteranopia (green-blind)

#676C7C

Tritanopia (blue-blind)

#5E7172

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #646e7c;
/* rgb */ color: rgb(100, 110, 124);
/* oklch */ color: oklch(53.5% 0.025 256.8);

Tailwind

colors: {
  custom: {
    50: '#9097a1',
    500: '#646e7c',
    950: '#000000',
  },
}

SCSS

$custom: #646e7c;
$custom-light: #9097a1;
$custom-dark: #000000;

JSON

{
  "hex": "#646e7c",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 124
  },
  "hsl": {
    "h": 215,
    "s": 10.714,
    "l": 43.922
  },
  "oklch": {
    "l": 0.53476,
    "c": 0.02514,
    "h": 256.8
  },
  "luminance": 0.15316
}

Semantic roles & 50–950 ramp

primary

#646E7C

secondary

#A59F97

accent

#9974B4

background

#F8F9F9

surface

#F0F2F2

border

#CBCCCC

text

#0C0D0F

muted

#7D7E7E

Preview Lab

Preview with #646E7C

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

Preview Lab → · Contrast checker → · Palette generator →