#646FA5#646FA5

#646FA5 is a mid, moderate blue. Relative luminance 0.168; OKLCH L 55.5% C 0.085 H 274.5°. Best body text is #FFFFFF at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#646FA5
RGB	rgb(100, 111, 165)
HSL	hsl(230, 27%, 52%)
HSV	hsv(230, 39%, 65%)
CMYK	cmyk(39.4%, 32.7%, 0%, 35.3%)
CIE-LAB	lab(48.00, 9.83, -30.34)
CIE-LCH	lch(48.00, 31.89, 287.95°)
OKLab	oklab(55.53% 0.0067 -0.0848)
OKLCH	oklch(55.53% 0.085 274.5)
XYZ	xyz(17.7295, 16.7940, 37.8974)
Luminance	0.1679 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FA5 #A59A64

analogous

#6490A5 #646FA5 #7A64A5

triadic

#646FA5 #A5646F #6FA564

tetradic

#646FA5 #A56490 #A59A64 #64A57A

square

#646FA5 #A56490 #A59A64 #64A57A

split-complementary

#646FA5 #A57A64 #90A564

monochromatic

#343B5A #4B5481 #646FA5 #8B93BB #B1B7D2

Accessibility & contrast

On white

4.82

#646FA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.36

#646FA5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646FA5

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FA5	#FFFFFF	#000000	##FFFFFF
##646FA5	1.00	4.82	4.36	4.82
#FFFFFF	4.82	1.00	21.00	1.00
#000000	4.36	21.00	1.00	21.00
##FFFFFF	4.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D75A7

Deuteranopia (green-blind)

#586FA4

Tritanopia (blue-blind)

#507A82

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #646fa5;
/* rgb */ color: rgb(100, 111, 165);
/* oklch */ color: oklch(55.5% 0.085 274.5);

Tailwind

colors: {
  custom: {
    50: '#9298c0',
    500: '#646fa5',
    950: '#000000',
  },
}

SCSS

$custom: #646fa5;
$custom-light: #9298c0;
$custom-dark: #000000;

JSON

{
  "hex": "#646fa5",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 165
  },
  "hsl": {
    "h": 229.846,
    "s": 26.531,
    "l": 51.961
  },
  "oklch": {
    "l": 0.55529,
    "c": 0.08508,
    "h": 274.5
  },
  "luminance": 0.16795
}

Semantic roles & 50–950 ramp

primary

#646FA5

secondary

#C1BCA4

accent

#B365C3

background

#F9F9FB

surface

#F1F2F7

border

#CBCCD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646FA5

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

Preview Lab → · Contrast checker → · Palette generator →