#646CC1#646CC1

#646CC1 is a mid, vivid blue. Relative luminance 0.173; OKLCH L 56.5% C 0.130 H 277.3°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#646CC1
RGB	rgb(100, 108, 193)
HSL	hsl(235, 43%, 57%)
HSV	hsv(235, 48%, 76%)
CMYK	cmyk(48.2%, 44%, 0%, 24.3%)
CIE-LAB	lab(48.62, 20.07, -45.63)
CIE-LCH	lch(48.62, 49.85, 293.74°)
OKLab	oklab(56.47% 0.0166 -0.1294)
OKLCH	oklch(56.47% 0.13 277.3)
XYZ	xyz(20.2408, 17.2836, 52.7113)
Luminance	0.1729 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CC1 #C1B964

analogous

#649AC1 #646CC1 #8B64C1

triadic

#646CC1 #C1646C #6CC164

tetradic

#646CC1 #C1649A #C1B964 #64C18B

square

#646CC1 #C1649A #C1B964 #64C18B

split-complementary

#646CC1 #C18B64 #9AC164

monochromatic

#31377A #424BA6 #646CC1 #9095D2 #BBBFE4

Accessibility & contrast

On white

4.71

#646CC1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#646CC1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646CC1

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CC1	#FFFFFF	#000000	##FFFFFF
##646CC1	1.00	4.71	4.46	4.71
#FFFFFF	4.71	1.00	21.00	1.00
#000000	4.46	21.00	1.00	21.00
##FFFFFF	4.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A77C4

Deuteranopia (green-blind)

#4270BF

Tritanopia (blue-blind)

#417E8D

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #646cc1;
/* rgb */ color: rgb(100, 108, 193);
/* oklch */ color: oklch(56.5% 0.130 277.3);

Tailwind

colors: {
  custom: {
    50: '#9596d4',
    500: '#646cc1',
    950: '#000000',
  },
}

SCSS

$custom: #646cc1;
$custom-light: #9596d4;
$custom-dark: #000000;

JSON

{
  "hex": "#646cc1",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 193
  },
  "hsl": {
    "h": 234.839,
    "s": 42.857,
    "l": 57.451
  },
  "oklch": {
    "l": 0.56468,
    "c": 0.13043,
    "h": 277.3
  },
  "luminance": 0.17285
}

Semantic roles & 50–950 ramp

primary

#646CC1

secondary

#D3D0AE

accent

#C855D3

background

#F9F9FD

surface

#F2F1FA

border

#CCCBD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #646CC1

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

Preview Lab → · Contrast checker → · Palette generator →