#646DC1#646DC1

#646DC1 is a mid, vivid blue. Relative luminance 0.175; OKLCH L 56.7% C 0.129 H 276.8°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#646DC1
RGB	rgb(100, 109, 193)
HSL	hsl(234, 43%, 57%)
HSV	hsv(234, 48%, 76%)
CMYK	cmyk(48.2%, 43.5%, 0%, 24.3%)
CIE-LAB	lab(48.88, 19.45, -45.22)
CIE-LCH	lch(48.88, 49.22, 293.28°)
OKLab	oklab(56.67% 0.0154 -0.1281)
OKLCH	oklch(56.67% 0.129 276.8)
XYZ	xyz(20.3468, 17.4957, 52.7466)
Luminance	0.1750 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DC1 #C1B864

analogous

#649BC1 #646DC1 #8A64C1

triadic

#646DC1 #C1646D #6DC164

tetradic

#646DC1 #C1649B #C1B864 #64C18A

square

#646DC1 #C1649B #C1B864 #64C18A

split-complementary

#646DC1 #C18A64 #9BC164

monochromatic

#31387A #424CA6 #646DC1 #9096D2 #BBBFE4

Accessibility & contrast

On white

4.67

#646DC1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#646DC1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #646DC1

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DC1	#FFFFFF	#000000	##FFFFFF
##646DC1	1.00	4.67	4.50	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B78C4

Deuteranopia (green-blind)

#4371BF

Tritanopia (blue-blind)

#417F8D

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #646dc1;
/* rgb */ color: rgb(100, 109, 193);
/* oklch */ color: oklch(56.7% 0.129 276.8);

Tailwind

colors: {
  custom: {
    50: '#9596d4',
    500: '#646dc1',
    950: '#000000',
  },
}

SCSS

$custom: #646dc1;
$custom-light: #9596d4;
$custom-dark: #000000;

JSON

{
  "hex": "#646dc1",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 193
  },
  "hsl": {
    "h": 234.194,
    "s": 42.857,
    "l": 57.451
  },
  "oklch": {
    "l": 0.56668,
    "c": 0.12906,
    "h": 276.8
  },
  "luminance": 0.17497
}

Semantic roles & 50–950 ramp

primary

#646DC1

secondary

#D3D0AE

accent

#C655D3

background

#F9F9FD

surface

#F2F2FA

border

#CCCCD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #646DC1

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

Preview Lab → · Contrast checker → · Palette generator →