#646A82#646A82

#646A82 is a mid, muted blue. Relative luminance 0.146; OKLCH L 52.8% C 0.038 H 274.0°. Best body text is #FFFFFF at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#646A82
RGB	rgb(100, 106, 130)
HSL	hsl(228, 13%, 45%)
HSV	hsv(228, 23%, 51%)
CMYK	cmyk(23.1%, 18.5%, 0%, 49%)
CIE-LAB	lab(45.12, 3.33, -14.04)
CIE-LCH	lch(45.12, 14.42, 283.34°)
OKLab	oklab(52.81% 0.0027 -0.0384)
OKLCH	oklch(52.81% 0.038 274)
XYZ	xyz(14.4378, 14.6288, 23.1777)
Luminance	0.1463 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646A82 #827C64

analogous

#647982 #646A82 #6D6482

triadic

#646A82 #82646A #6A8264

tetradic

#646A82 #826479 #827C64 #64826D

square

#646A82 #826479 #827C64 #64826D

split-complementary

#646A82 #826D64 #798264

monochromatic

#2F323D #494E5F #646A82 #8389A0 #A6AABA

Accessibility & contrast

On white

5.35

#646A82 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.93

#646A82 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646A82

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646A82	#FFFFFF	#000000	##FFFFFF
##646A82	1.00	5.35	3.93	5.35
#FFFFFF	5.35	1.00	21.00	1.00
#000000	3.93	21.00	1.00	21.00
##FFFFFF	5.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#636C83

Deuteranopia (green-blind)

#616A81

Tritanopia (blue-blind)

#5D6E72

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #646a82;
/* rgb */ color: rgb(100, 106, 130);
/* oklch */ color: oklch(52.8% 0.038 274.0);

Tailwind

colors: {
  custom: {
    50: '#9094a6',
    500: '#646a82',
    950: '#000000',
  },
}

SCSS

$custom: #646a82;
$custom-light: #9094a6;
$custom-dark: #000000;

JSON

{
  "hex": "#646a82",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 130
  },
  "hsl": {
    "h": 228,
    "s": 13.043,
    "l": 45.098
  },
  "oklch": {
    "l": 0.52808,
    "c": 0.03845,
    "h": 274
  },
  "luminance": 0.14629
}

Semantic roles & 50–950 ramp

primary

#646A82

secondary

#A9A698

accent

#A872B6

background

#F8F9FA

surface

#F0F1F4

border

#CBCBCE

text

#0C0D0F

muted

#7D7E7F

Preview Lab

Preview with #646A82

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

Preview Lab → · Contrast checker → · Palette generator →