#646DD6#646DD6

#646DD6 is a mid, vivid blue. Relative luminance 0.185; OKLCH L 58.0% C 0.159 H 276.6°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#646DD6
RGB	rgb(100, 109, 214)
HSL	hsl(235, 58%, 62%)
HSV	hsv(235, 53%, 84%)
CMYK	cmyk(53.3%, 49.1%, 0%, 16.1%)
CIE-LAB	lab(50.10, 26.03, -55.28)
CIE-LCH	lch(50.10, 61.10, 295.22°)
OKLab	oklab(57.99% 0.0181 -0.1577)
OKLCH	oklch(57.99% 0.159 276.6)
XYZ	xyz(22.8579, 18.5002, 65.9717)
Luminance	0.1850 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DD6 #D6CD64

analogous

#64A6D6 #646DD6 #9464D6

triadic

#646DD6 #D6646D #6DD664

tetradic

#646DD6 #D664A6 #D6CD64 #64D694

square

#646DD6 #D664A6 #D6CD64 #64D694

split-complementary

#646DD6 #D69464 #A6D664

monochromatic

#283198 #3540C8 #646DD6 #949BE3 #C5C8F0

Accessibility & contrast

On white

4.47

#646DD6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.70

#646DD6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646DD6

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DD6	#FFFFFF	#000000	##000000
##646DD6	1.00	4.47	4.70	4.70
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.70	21.00	1.00	1.00
##000000	4.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A7CDA

Deuteranopia (green-blind)

#2C73D4

Tritanopia (blue-blind)

#2F8497

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #646dd6;
/* rgb */ color: rgb(100, 109, 214);
/* oklch */ color: oklch(58.0% 0.159 276.6);

Tailwind

colors: {
  custom: {
    50: '#9896e3',
    500: '#646dd6',
    950: '#000000',
  },
}

SCSS

$custom: #646dd6;
$custom-light: #9896e3;
$custom-dark: #000000;

JSON

{
  "hex": "#646dd6",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 214
  },
  "hsl": {
    "h": 235.263,
    "s": 58.163,
    "l": 61.569
  },
  "oklch": {
    "l": 0.57987,
    "c": 0.1587,
    "h": 276.6
  },
  "luminance": 0.18502
}

Semantic roles & 50–950 ramp

primary

#646DD6

secondary

#E0DDB6

accent

#B920C6

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0D15

muted

#7E7E84

Preview Lab

Preview with #646DD6

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

Preview Lab → · Contrast checker → · Palette generator →