#646BC2#646BC2

#646BC2 is a mid, vivid blue. Relative luminance 0.171; OKLCH L 56.3% C 0.133 H 277.7°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#646BC2
RGB	rgb(100, 107, 194)
HSL	hsl(236, 44%, 58%)
HSV	hsv(236, 48%, 76%)
CMYK	cmyk(48.5%, 44.8%, 0%, 23.9%)
CIE-LAB	lab(48.41, 20.99, -46.54)
CIE-LCH	lch(48.41, 51.05, 294.28°)
OKLab	oklab(56.33% 0.0179 -0.132)
OKLCH	oklch(56.33% 0.133 277.7)
XYZ	xyz(20.2478, 17.1186, 53.2658)
Luminance	0.1712 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646BC2 #C2BB64

analogous

#649AC2 #646BC2 #8C64C2

triadic

#646BC2 #C2646B #6BC264

tetradic

#646BC2 #C2649A #C2BB64 #64C28C

square

#646BC2 #C2649A #C2BB64 #64C28C

split-complementary

#646BC2 #C28C64 #9AC264

monochromatic

#30367B #4249A7 #646BC2 #9095D3 #BCBFE5

Accessibility & contrast

On white

4.75

#646BC2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#646BC2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646BC2

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646BC2	#FFFFFF	#000000	##FFFFFF
##646BC2	1.00	4.75	4.42	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4777C5

Deuteranopia (green-blind)

#3F6FC0

Tritanopia (blue-blind)

#417D8D

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #646bc2;
/* rgb */ color: rgb(100, 107, 194);
/* oklch */ color: oklch(56.3% 0.133 277.7);

Tailwind

colors: {
  custom: {
    50: '#9695d5',
    500: '#646bc2',
    950: '#000000',
  },
}

SCSS

$custom: #646bc2;
$custom-light: #9695d5;
$custom-dark: #000000;

JSON

{
  "hex": "#646bc2",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 194
  },
  "hsl": {
    "h": 235.532,
    "s": 43.519,
    "l": 57.647
  },
  "oklch": {
    "l": 0.56329,
    "c": 0.13323,
    "h": 277.7
  },
  "luminance": 0.1712
}

Semantic roles & 50–950 ramp

primary

#646BC2

secondary

#D4D1AE

accent

#CA55D3

background

#F9F9FD

surface

#F2F1FA

border

#CCCBD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #646BC2

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

Preview Lab → · Contrast checker → · Palette generator →