#646DA5#646DA5

#646DA5 is a mid, moderate blue. Relative luminance 0.164; OKLCH L 55.1% C 0.088 H 276.2°. Best body text is #FFFFFF at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#646DA5
RGB	rgb(100, 109, 165)
HSL	hsl(232, 27%, 52%)
HSV	hsv(232, 39%, 65%)
CMYK	cmyk(39.4%, 33.9%, 0%, 35.3%)
CIE-LAB	lab(47.45, 11.05, -31.20)
CIE-LCH	lch(47.45, 33.10, 289.49°)
OKLab	oklab(55.1% 0.0094 -0.0873)
OKLCH	oklch(55.1% 0.088 276.2)
XYZ	xyz(17.5137, 16.3625, 37.8255)
Luminance	0.1636 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DA5 #A59C64

analogous

#648EA5 #646DA5 #7C64A5

triadic

#646DA5 #A5646D #6DA564

tetradic

#646DA5 #A5648E #A59C64 #64A57C

square

#646DA5 #A5648E #A59C64 #64A57C

split-complementary

#646DA5 #A57C64 #8EA564

monochromatic

#343A5A #4B5281 #646DA5 #8B91BB #B1B6D2

Accessibility & contrast

On white

4.92

#646DA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.27

#646DA5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646DA5

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DA5	#FFFFFF	#000000	##FFFFFF
##646DA5	1.00	4.92	4.27	4.92
#FFFFFF	4.92	1.00	21.00	1.00
#000000	4.27	21.00	1.00	21.00
##FFFFFF	4.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A73A7

Deuteranopia (green-blind)

#566EA4

Tritanopia (blue-blind)

#507881

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #646da5;
/* rgb */ color: rgb(100, 109, 165);
/* oklch */ color: oklch(55.1% 0.088 276.2);

Tailwind

colors: {
  custom: {
    50: '#9396c0',
    500: '#646da5',
    950: '#000000',
  },
}

SCSS

$custom: #646da5;
$custom-light: #9396c0;
$custom-dark: #000000;

JSON

{
  "hex": "#646da5",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 165
  },
  "hsl": {
    "h": 231.692,
    "s": 26.531,
    "l": 51.961
  },
  "oklch": {
    "l": 0.55102,
    "c": 0.08783,
    "h": 276.2
  },
  "luminance": 0.16363
}

Semantic roles & 50–950 ramp

primary

#646DA5

secondary

#C1BDA4

accent

#B665C3

background

#F9F9FB

surface

#F1F2F7

border

#CBCCD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646DA5

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

Preview Lab → · Contrast checker → · Palette generator →