#646A79#646A79

#646A79 is a mid, muted blue. Relative luminance 0.144; OKLCH L 52.4% C 0.025 H 268.2°. Best body text is #FFFFFF at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#646A79
RGB	rgb(100, 106, 121)
HSL	hsl(223, 10%, 43%)
HSV	hsv(223, 17%, 47%)
CMYK	cmyk(17.4%, 12.4%, 0%, 52.5%)
CIE-LAB	lab(44.80, 1.11, -9.12)
CIE-LCH	lch(44.80, 9.19, 276.97°)
OKLab	oklab(52.45% -0.0008 -0.0247)
OKLCH	oklch(52.45% 0.025 268.2)
XYZ	xyz(13.8599, 14.3976, 20.1343)
Luminance	0.1440 (WCAG relative)
Temperature	neutral
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646A79 #797364

analogous

#647479 #646A79 #686479

triadic

#646A79 #79646A #6A7964

tetradic

#646A79 #796474 #797364 #647968

square

#646A79 #796474 #797364 #647968

split-complementary

#646A79 #796864 #747964

monochromatic

#2D2F36 #484D57 #646A79 #828898 #A4A8B4

Accessibility & contrast

On white

5.41

#646A79 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.88

#646A79 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646A79

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646A79	#FFFFFF	#000000	##FFFFFF
##646A79	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)

#666B7A

Deuteranopia (green-blind)

#646979

Tritanopia (blue-blind)

#5F6D6F

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #646a79;
/* rgb */ color: rgb(100, 106, 121);
/* oklch */ color: oklch(52.4% 0.025 268.2);

Tailwind

colors: {
  custom: {
    50: '#90949f',
    500: '#646a79',
    950: '#000000',
  },
}

SCSS

$custom: #646a79;
$custom-light: #90949f;
$custom-dark: #000000;

JSON

{
  "hex": "#646a79",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 121
  },
  "hsl": {
    "h": 222.857,
    "s": 9.502,
    "l": 43.333
  },
  "oklch": {
    "l": 0.52448,
    "c": 0.02472,
    "h": 268.2
  },
  "luminance": 0.14398
}

Semantic roles & 50–950 ramp

primary

#646A79

secondary

#A39F96

accent

#A175B2

background

#F8F9F9

surface

#F0F1F2

border

#CBCBCC

text

#0C0D0E

muted

#7D7E7E

Preview Lab

Preview with #646A79

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

Preview Lab → · Contrast checker → · Palette generator →