#646C86#646C86

#646C86 is a mid, muted blue. Relative luminance 0.152; OKLCH L 53.4% C 0.042 H 271.5°. Best body text is #FFFFFF at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#646C86
RGB	rgb(100, 108, 134)
HSL	hsl(226, 15%, 46%)
HSV	hsv(226, 25%, 53%)
CMYK	cmyk(25.4%, 19.4%, 0%, 47.5%)
CIE-LAB	lab(45.85, 3.14, -15.33)
CIE-LCH	lch(45.85, 15.65, 281.58°)
OKLab	oklab(53.42% 0.0011 -0.042)
OKLCH	oklch(53.42% 0.042 271.5)
XYZ	xyz(14.9200, 15.1553, 24.6888)
Luminance	0.1516 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646C86 #867E64

analogous

#647D86 #646C86 #6D6486

triadic

#646C86 #86646C #6C8664

tetradic

#646C86 #86647D #867E64 #64866D

square

#646C86 #86647D #867E64 #64866D

split-complementary

#646C86 #866D64 #7D8664

monochromatic

#303440 #4A5063 #646C86 #848BA3 #A7ACBD

Accessibility & contrast

On white

5.21

#646C86 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.03

#646C86 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646C86

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646C86	#FFFFFF	#000000	##FFFFFF
##646C86	1.00	5.21	4.03	5.21
#FFFFFF	5.21	1.00	21.00	1.00
#000000	4.03	21.00	1.00	21.00
##FFFFFF	5.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#646E87

Deuteranopia (green-blind)

#626B85

Tritanopia (blue-blind)

#5C7175

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #646c86;
/* rgb */ color: rgb(100, 108, 134);
/* oklch */ color: oklch(53.4% 0.042 271.5);

Tailwind

colors: {
  custom: {
    50: '#9096a9',
    500: '#646c86',
    950: '#000000',
  },
}

SCSS

$custom: #646c86;
$custom-light: #9096a9;
$custom-dark: #000000;

JSON

{
  "hex": "#646c86",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 134
  },
  "hsl": {
    "h": 225.882,
    "s": 14.53,
    "l": 45.882
  },
  "oklch": {
    "l": 0.53424,
    "c": 0.04201,
    "h": 271.5
  },
  "luminance": 0.15156
}

Semantic roles & 50–950 ramp

primary

#646C86

secondary

#ACA89A

accent

#A770B7

background

#F8F9FA

surface

#F0F1F4

border

#CBCBCE

text

#0C0D0F

muted

#7D7E7F

Preview Lab

Preview with #646C86

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

Preview Lab → · Contrast checker → · Palette generator →