#646FC5#646FC5

#646FC5 is a mid, vivid blue. Relative luminance 0.181; OKLCH L 57.3% C 0.132 H 275.9°. Best body text is #000000 at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#646FC5
RGB	rgb(100, 111, 197)
HSL	hsl(233, 46%, 58%)
HSV	hsv(233, 49%, 77%)
CMYK	cmyk(49.2%, 43.7%, 0%, 22.7%)
CIE-LAB	lab(49.63, 19.47, -46.32)
CIE-LCH	lch(49.63, 50.25, 292.79°)
OKLab	oklab(57.31% 0.0136 -0.1314)
OKLCH	oklch(57.31% 0.132 275.9)
XYZ	xyz(21.0149, 18.1082, 55.2004)
Luminance	0.1811 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FC5 #C5BA64

analogous

#649FC5 #646FC5 #8964C5

triadic

#646FC5 #C5646F #6FC564

tetradic

#646FC5 #C5649F #C5BA64 #64C589

square

#646FC5 #C5649F #C5BA64 #64C589

split-complementary

#646FC5 #C58964 #9FC564

monochromatic

#30397F #404CAC #646FC5 #9198D6 #BDC2E6

Accessibility & contrast

On white

4.54

#646FC5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.62

#646FC5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646FC5

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FC5	#FFFFFF	#000000	##000000
##646FC5	1.00	4.54	4.62	4.62
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.62	21.00	1.00	1.00
##000000	4.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C7AC8

Deuteranopia (green-blind)

#4372C3

Tritanopia (blue-blind)

#3E8190

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #646fc5;
/* rgb */ color: rgb(100, 111, 197);
/* oklch */ color: oklch(57.3% 0.132 275.9);

Tailwind

colors: {
  custom: {
    50: '#9698d7',
    500: '#646fc5',
    950: '#000000',
  },
}

SCSS

$custom: #646fc5;
$custom-light: #9698d7;
$custom-dark: #000000;

JSON

{
  "hex": "#646fc5",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 197
  },
  "hsl": {
    "h": 233.196,
    "s": 45.54,
    "l": 58.235
  },
  "oklch": {
    "l": 0.57311,
    "c": 0.13207,
    "h": 275.9
  },
  "luminance": 0.18109
}

Semantic roles & 50–950 ramp

primary

#646FC5

secondary

#D6D1AF

accent

#C653D5

background

#F9F9FD

surface

#F2F2FA

border

#CCCCD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #646FC5

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

Preview Lab → · Contrast checker → · Palette generator →