#646FD1#646FD1

#646FD1 is a mid, vivid blue. Relative luminance 0.187; OKLCH L 58.1% C 0.149 H 275.9°. Best body text is #000000 at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#646FD1
RGB	rgb(100, 111, 209)
HSL	hsl(234, 54%, 61%)
HSV	hsv(234, 52%, 82%)
CMYK	cmyk(52.2%, 46.9%, 0%, 18%)
CIE-LAB	lab(50.31, 23.23, -52.09)
CIE-LCH	lch(50.31, 57.04, 294.03°)
OKLab	oklab(58.05% 0.0154 -0.1483)
OKLCH	oklch(58.05% 0.149 275.9)
XYZ	xyz(22.4449, 18.6802, 62.7322)
Luminance	0.1868 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FD1 #D1C664

analogous

#64A5D1 #646FD1 #8F64D1

triadic

#646FD1 #D1646F #6FD164

tetradic

#646FD1 #D164A5 #D1C664 #64D18F

square

#646FD1 #D164A5 #D1C664 #64D18F

split-complementary

#646FD1 #D18F64 #A5D164

monochromatic

#2B3590 #3946BF #646FD1 #939BDF #C2C7ED

Accessibility & contrast

On white

4.43

#646FD1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.74

#646FD1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646FD1

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FD1	#FFFFFF	#000000	##000000
##646FD1	1.00	4.43	4.74	4.74
#FFFFFF	4.43	1.00	21.00	21.00
#000000	4.74	21.00	1.00	1.00
##000000	4.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#437CD5

Deuteranopia (green-blind)

#3773CF

Tritanopia (blue-blind)

#348496

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #646fd1;
/* rgb */ color: rgb(100, 111, 209);
/* oklch */ color: oklch(58.1% 0.149 275.9);

Tailwind

colors: {
  custom: {
    50: '#9798e0',
    500: '#646fd1',
    950: '#000000',
  },
}

SCSS

$custom: #646fd1;
$custom-light: #9798e0;
$custom-dark: #000000;

JSON

{
  "hex": "#646fd1",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 209
  },
  "hsl": {
    "h": 233.945,
    "s": 54.229,
    "l": 60.588
  },
  "oklch": {
    "l": 0.58052,
    "c": 0.14908,
    "h": 275.9
  },
  "luminance": 0.18682
}

Semantic roles & 50–950 ramp

primary

#646FD1

secondary

#DDD9B4

accent

#B224C2

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646FD1

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

Preview Lab → · Contrast checker → · Palette generator →