#646DC3#646DC3

#646DC3 is a mid, vivid blue. Relative luminance 0.176; OKLCH L 56.8% C 0.132 H 276.8°. Best body text is #FFFFFF at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#646DC3
RGB	rgb(100, 109, 195)
HSL	hsl(234, 44%, 58%)
HSV	hsv(234, 49%, 76%)
CMYK	cmyk(48.7%, 44.1%, 0%, 23.5%)
CIE-LAB	lab(48.99, 20.07, -46.19)
CIE-LCH	lch(48.99, 50.36, 293.49°)
OKLab	oklab(56.79% 0.0157 -0.131)
OKLCH	oklch(56.79% 0.132 276.8)
XYZ	xyz(20.5714, 17.5856, 53.9296)
Luminance	0.1759 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DC3 #C3BA64

analogous

#649CC3 #646DC3 #8A64C3

triadic

#646DC3 #C3646D #6DC364

tetradic

#646DC3 #C3649C #C3BA64 #64C38A

square

#646DC3 #C3649C #C3BA64 #64C38A

split-complementary

#646DC3 #C38A64 #9CC364

monochromatic

#30377C #414BA9 #646DC3 #9097D4 #BCC0E5

Accessibility & contrast

On white

4.65

#646DC3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#646DC3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #646DC3

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DC3	#FFFFFF	#000000	##FFFFFF
##646DC3	1.00	4.65	4.52	4.65
#FFFFFF	4.65	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A78C6

Deuteranopia (green-blind)

#4271C1

Tritanopia (blue-blind)

#407F8E

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #646dc3;
/* rgb */ color: rgb(100, 109, 195);
/* oklch */ color: oklch(56.8% 0.132 276.8);

Tailwind

colors: {
  custom: {
    50: '#9696d5',
    500: '#646dc3',
    950: '#000000',
  },
}

SCSS

$custom: #646dc3;
$custom-light: #9696d5;
$custom-dark: #000000;

JSON

{
  "hex": "#646dc3",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 195
  },
  "hsl": {
    "h": 234.316,
    "s": 44.186,
    "l": 57.843
  },
  "oklch": {
    "l": 0.56789,
    "c": 0.13193,
    "h": 276.8
  },
  "luminance": 0.17587
}

Semantic roles & 50–950 ramp

primary

#646DC3

secondary

#D4D1AE

accent

#C854D4

background

#F9F9FD

surface

#F2F2FA

border

#CCCCD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #646DC3

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

Preview Lab → · Contrast checker → · Palette generator →