#646CEF#646CEF

#646CEF is a mid, vivid blue. Relative luminance 0.197; OKLCH L 59.5% C 0.194 H 276.2°. Best body text is #000000 at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#646CEF
RGB	rgb(100, 108, 239)
HSL	hsl(237, 81%, 66%)
HSV	hsv(237, 58%, 94%)
CMYK	cmyk(58.2%, 54.8%, 0%, 6.3%)
CIE-LAB	lab(51.46, 34.62, -67.17)
CIE-LCH	lch(51.46, 75.57, 297.27°)
OKLab	oklab(59.52% 0.0208 -0.1927)
OKLCH	oklch(59.52% 0.194 276.2)
XYZ	xyz(26.1930, 19.6645, 84.0600)
Luminance	0.1967 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CEF #EFE764

analogous

#64B2EF #646CEF #A264EF

triadic

#646CEF #EF646C #6CEF64

tetradic

#646CEF #EF64B2 #EFE764 #64EFA2

square

#646CEF #EF64B2 #EFE764 #64EFA2

split-complementary

#646CEF #EFA264 #B2EF64

monochromatic

#141EC4 #2D37E9 #646CEF #9BA1F5 #D3D5FA

Accessibility & contrast

On white

4.26

#646CEF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.93

#646CEF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646CEF

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CEF	#FFFFFF	#000000	##000000
##646CEF	1.00	4.26	4.93	4.93
#FFFFFF	4.26	1.00	21.00	21.00
#000000	4.93	21.00	1.00	1.00
##000000	4.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0181F3

Deuteranopia (green-blind)

#0075EC

Tritanopia (blue-blind)

#008BA3

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #646cef;
/* rgb */ color: rgb(100, 108, 239);
/* oklch */ color: oklch(59.5% 0.194 276.2);

Tailwind

colors: {
  custom: {
    50: '#9c96f5',
    500: '#646cef',
    950: '#000000',
  },
}

SCSS

$custom: #646cef;
$custom-light: #9c96f5;
$custom-dark: #000000;

JSON

{
  "hex": "#646cef",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 239
  },
  "hsl": {
    "h": 236.547,
    "s": 81.287,
    "l": 66.471
  },
  "oklch": {
    "l": 0.5952,
    "c": 0.19378,
    "h": 276.2
  },
  "luminance": 0.19666
}

Semantic roles & 50–950 ramp

primary

#646CEF

secondary

#EEEBC1

accent

#D108DE

background

#FAF9FF

surface

#F4F1FE

border

#CECBD6

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #646CEF

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

Preview Lab → · Contrast checker → · Palette generator →