#646CE3#646CE3

#646CE3 is a mid, vivid blue. Relative luminance 0.190; OKLCH L 58.7% C 0.178 H 276.5°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#646CE3
RGB	rgb(100, 108, 227)
HSL	hsl(236, 69%, 64%)
HSV	hsv(236, 56%, 89%)
CMYK	cmyk(55.9%, 52.4%, 0%, 11%)
CIE-LAB	lab(50.66, 30.78, -61.72)
CIE-LCH	lch(50.66, 68.97, 296.51°)
OKLab	oklab(58.67% 0.0202 -0.1766)
OKLCH	oklch(58.67% 0.178 276.5)
XYZ	xyz(24.4788, 18.9788, 75.0315)
Luminance	0.1898 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CE3 #E3DB64

analogous

#64ACE3 #646CE3 #9B64E3

triadic

#646CE3 #E3646C #6CE364

tetradic

#646CE3 #E364AC #E3DB64 #64E39B

square

#646CE3 #E364AC #E3DB64 #64E39B

split-complementary

#646CE3 #E39B64 #ACE364

monochromatic

#1F28AD #303BDA #646CE3 #989DEC #CCCEF6

Accessibility & contrast

On white

4.38

#646CE3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.80

#646CE3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646CE3

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CE3	#FFFFFF	#000000	##000000
##646CE3	1.00	4.38	4.80	4.80
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.80	21.00	1.00	1.00
##000000	4.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#277EE7

Deuteranopia (green-blind)

#0373E1

Tritanopia (blue-blind)

#1B879D

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #646ce3;
/* rgb */ color: rgb(100, 108, 227);
/* oklch */ color: oklch(58.7% 0.178 276.5);

Tailwind

colors: {
  custom: {
    50: '#9a96ec',
    500: '#646ce3',
    950: '#000000',
  },
}

SCSS

$custom: #646ce3;
$custom-light: #9a96ec;
$custom-dark: #000000;

JSON

{
  "hex": "#646ce3",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 227
  },
  "hsl": {
    "h": 236.22,
    "s": 69.399,
    "l": 64.118
  },
  "oklch": {
    "l": 0.58674,
    "c": 0.17778,
    "h": 276.5
  },
  "luminance": 0.18981
}

Semantic roles & 50–950 ramp

primary

#646CE3

secondary

#E8E5BB

accent

#C514D1

background

#FAF9FE

surface

#F3F1FD

border

#CDCBD5

text

#0F0D16

muted

#7F7E84

Preview Lab

Preview with #646CE3

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

Preview Lab → · Contrast checker → · Palette generator →