#646DC0#646DC0

#646DC0 is a mid, vivid blue. Relative luminance 0.175; OKLCH L 56.6% C 0.128 H 276.8°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#646DC0
RGB	rgb(100, 109, 192)
HSL	hsl(234, 42%, 57%)
HSV	hsv(234, 48%, 75%)
CMYK	cmyk(47.9%, 43.2%, 0%, 24.7%)
CIE-LAB	lab(48.82, 19.15, -44.73)
CIE-LCH	lch(48.82, 48.65, 293.17°)
OKLab	oklab(56.61% 0.0152 -0.1267)
OKLCH	oklch(56.61% 0.128 276.8)
XYZ	xyz(20.2357, 17.4513, 52.1611)
Luminance	0.1745 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DC0 #C0B764

analogous

#649BC0 #646DC0 #8964C0

triadic

#646DC0 #C0646D #6DC064

tetradic

#646DC0 #C0649B #C0B764 #64C089

square

#646DC0 #C0649B #C0B764 #64C089

split-complementary

#646DC0 #C08964 #9BC064

monochromatic

#313879 #434CA4 #646DC0 #9096D2 #BBBFE3

Accessibility & contrast

On white

4.68

#646DC0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#646DC0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646DC0

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DC0	#FFFFFF	#000000	##FFFFFF
##646DC0	1.00	4.68	4.49	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C78C3

Deuteranopia (green-blind)

#4470BE

Tritanopia (blue-blind)

#427E8D

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #646dc0;
/* rgb */ color: rgb(100, 109, 192);
/* oklch */ color: oklch(56.6% 0.128 276.8);

Tailwind

colors: {
  custom: {
    50: '#9596d3',
    500: '#646dc0',
    950: '#000000',
  },
}

SCSS

$custom: #646dc0;
$custom-light: #9596d3;
$custom-dark: #000000;

JSON

{
  "hex": "#646dc0",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 192
  },
  "hsl": {
    "h": 234.13,
    "s": 42.202,
    "l": 57.255
  },
  "oklch": {
    "l": 0.56609,
    "c": 0.12761,
    "h": 276.8
  },
  "luminance": 0.17452
}

Semantic roles & 50–950 ramp

primary

#646DC0

secondary

#D3CFAD

accent

#C656D2

background

#F9F9FD

surface

#F2F2FA

border

#CCCCD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #646DC0

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

Preview Lab → · Contrast checker → · Palette generator →