#646CA5#646CA5

#646CA5 is a mid, moderate blue. Relative luminance 0.162; OKLCH L 54.9% C 0.089 H 276.9°. Best body text is #FFFFFF at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#646CA5
RGB	rgb(100, 108, 165)
HSL	hsl(233, 27%, 52%)
HSV	hsv(233, 39%, 65%)
CMYK	cmyk(39.4%, 34.5%, 0%, 35.3%)
CIE-LAB	lab(47.17, 11.66, -31.64)
CIE-LCH	lch(47.17, 33.72, 290.23°)
OKLab	oklab(54.89% 0.0108 -0.0886)
OKLCH	oklch(54.89% 0.089 276.9)
XYZ	xyz(17.4076, 16.1503, 37.7901)
Luminance	0.1615 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CA5 #A59D64

analogous

#648DA5 #646CA5 #7D64A5

triadic

#646CA5 #A5646C #6CA564

tetradic

#646CA5 #A5648D #A59D64 #64A57D

square

#646CA5 #A5648D #A59D64 #64A57D

split-complementary

#646CA5 #A57D64 #8DA564

monochromatic

#34395A #4B5281 #646CA5 #8B91BB #B1B5D2

Accessibility & contrast

On white

4.96

#646CA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.23

#646CA5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646CA5

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CA5	#FFFFFF	#000000	##FFFFFF
##646CA5	1.00	4.96	4.23	4.96
#FFFFFF	4.96	1.00	21.00	1.00
#000000	4.23	21.00	1.00	21.00
##FFFFFF	4.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5972A7

Deuteranopia (green-blind)

#556DA4

Tritanopia (blue-blind)

#507781

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #646ca5;
/* rgb */ color: rgb(100, 108, 165);
/* oklch */ color: oklch(54.9% 0.089 276.9);

Tailwind

colors: {
  custom: {
    50: '#9396c0',
    500: '#646ca5',
    950: '#000000',
  },
}

SCSS

$custom: #646ca5;
$custom-light: #9396c0;
$custom-dark: #000000;

JSON

{
  "hex": "#646ca5",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 165
  },
  "hsl": {
    "h": 232.615,
    "s": 26.531,
    "l": 51.961
  },
  "oklch": {
    "l": 0.54889,
    "c": 0.08922,
    "h": 276.9
  },
  "luminance": 0.16151
}

Semantic roles & 50–950 ramp

primary

#646CA5

secondary

#C1BDA4

accent

#B765C3

background

#F9F9FB

surface

#F1F1F7

border

#CBCBD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646CA5

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

Preview Lab → · Contrast checker → · Palette generator →