#646FE6#646FE6

#646FE6 is a mid, vivid blue. Relative luminance 0.198; OKLCH L 59.4% C 0.178 H 275.6°. Best body text is #000000 at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#646FE6
RGB	rgb(100, 111, 230)
HSL	hsl(235, 72%, 65%)
HSV	hsv(235, 57%, 90%)
CMYK	cmyk(56.5%, 51.7%, 0%, 9.8%)
CIE-LAB	lab(51.60, 29.92, -61.90)
CIE-LCH	lch(51.60, 68.75, 295.80°)
OKLab	oklab(59.44% 0.0174 -0.1771)
OKLCH	oklch(59.44% 0.178 275.6)
XYZ	xyz(25.2183, 19.7896, 77.3384)
Luminance	0.1979 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FE6 #E6DB64

analogous

#64B0E6 #646FE6 #9A64E6

triadic

#646FE6 #E6646F #6FE664

tetradic

#646FE6 #E664B0 #E6DB64 #64E69A

square

#646FE6 #E664B0 #E6DB64 #64E69A

split-complementary

#646FE6 #E69A64 #B0E664

monochromatic

#1D2AB3 #2F3EDD #646FE6 #99A0EE #CDD1F7

Accessibility & contrast

On white

4.24

#646FE6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.96

#646FE6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646FE6

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FE6	#FFFFFF	#000000	##000000
##646FE6	1.00	4.24	4.96	4.96
#FFFFFF	4.24	1.00	21.00	21.00
#000000	4.96	21.00	1.00	1.00
##000000	4.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B81EA

Deuteranopia (green-blind)

#0B76E4

Tritanopia (blue-blind)

#138AA0

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #646fe6;
/* rgb */ color: rgb(100, 111, 230);
/* oklch */ color: oklch(59.4% 0.178 275.6);

Tailwind

colors: {
  custom: {
    50: '#9a98ef',
    500: '#646fe6',
    950: '#000000',
  },
}

SCSS

$custom: #646fe6;
$custom-light: #9a98ef;
$custom-dark: #000000;

JSON

{
  "hex": "#646fe6",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 230
  },
  "hsl": {
    "h": 234.923,
    "s": 72.222,
    "l": 64.706
  },
  "oklch": {
    "l": 0.59438,
    "c": 0.17796,
    "h": 275.6
  },
  "luminance": 0.19791
}

Semantic roles & 50–950 ramp

primary

#646FE6

secondary

#E9E5BD

accent

#C411D4

background

#FAF9FE

surface

#F3F2FD

border

#CDCCD5

text

#0F0D16

muted

#7F7E84

Preview Lab

Preview with #646FE6

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

Preview Lab → · Contrast checker → · Palette generator →