#646CA3#646CA3

#646CA3 is a mid, moderate blue. Relative luminance 0.161; OKLCH L 54.8% C 0.086 H 276.8°. Best body text is #FFFFFF at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#646CA3
RGB	rgb(100, 108, 163)
HSL	hsl(232, 26%, 52%)
HSV	hsv(232, 39%, 64%)
CMYK	cmyk(38.7%, 33.7%, 0%, 36.1%)
CIE-LAB	lab(47.08, 11.08, -30.61)
CIE-LCH	lch(47.08, 32.55, 289.90°)
OKLab	oklab(54.79% 0.0103 -0.0856)
OKLCH	oklch(54.79% 0.086 276.8)
XYZ	xyz(17.2270, 16.0781, 36.8389)
Luminance	0.1608 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CA3 #A39B64

analogous

#648CA3 #646CA3 #7C64A3

triadic

#646CA3 #A3646C #6CA364

tetradic

#646CA3 #A3648C #A39B64 #64A37C

square

#646CA3 #A3648C #A39B64 #64A37C

split-complementary

#646CA3 #A37C64 #8CA364

monochromatic

#343958 #4B527F #646CA3 #8A90BA #B1B5D1

Accessibility & contrast

On white

4.98

#646CA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.22

#646CA3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646CA3

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CA3	#FFFFFF	#000000	##FFFFFF
##646CA3	1.00	4.98	4.22	4.98
#FFFFFF	4.98	1.00	21.00	1.00
#000000	4.22	21.00	1.00	21.00
##FFFFFF	4.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A72A5

Deuteranopia (green-blind)

#566DA2

Tritanopia (blue-blind)

#517780

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #646ca3;
/* rgb */ color: rgb(100, 108, 163);
/* oklch */ color: oklch(54.8% 0.086 276.8);

Tailwind

colors: {
  custom: {
    50: '#9296be',
    500: '#646ca3',
    950: '#000000',
  },
}

SCSS

$custom: #646ca3;
$custom-light: #9296be;
$custom-dark: #000000;

JSON

{
  "hex": "#646ca3",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 163
  },
  "hsl": {
    "h": 232.381,
    "s": 25.506,
    "l": 51.569
  },
  "oklch": {
    "l": 0.54786,
    "c": 0.08621,
    "h": 276.8
  },
  "luminance": 0.16079
}

Semantic roles & 50–950 ramp

primary

#646CA3

secondary

#BFBCA4

accent

#B666C2

background

#F9F9FB

surface

#F1F1F7

border

#CBCBD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646CA3

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

Preview Lab → · Contrast checker → · Palette generator →