#646CF1#646CF1

#646CF1 is a mid, vivid blue. Relative luminance 0.198; OKLCH L 59.7% C 0.196 H 276.1°. Best body text is #000000 at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#646CF1
RGB	rgb(100, 108, 241)
HSL	hsl(237, 83%, 67%)
HSV	hsv(237, 59%, 95%)
CMYK	cmyk(58.5%, 55.2%, 0%, 5.5%)
CIE-LAB	lab(51.59, 35.26, -68.07)
CIE-LCH	lch(51.59, 76.66, 297.38°)
OKLab	oklab(59.66% 0.0208 -0.1953)
OKLCH	oklch(59.66% 0.196 276.1)
XYZ	xyz(26.4901, 19.7833, 85.6247)
Luminance	0.1978 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CF1 #F1E964

analogous

#64B2F1 #646CF1 #A364F1

triadic

#646CF1 #F1646C #6CF164

tetradic

#646CF1 #F164B2 #F1E964 #64F1A3

square

#646CF1 #F164B2 #F1E964 #64F1A3

split-complementary

#646CF1 #F1A364 #B2F164

monochromatic

#121CC8 #2C37EC #646CF1 #9CA1F6 #D4D6FB

Accessibility & contrast

On white

4.24

#646CF1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.96

#646CF1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646CF1

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CF1	#FFFFFF	#000000	##000000
##646CF1	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)

#0081F6

Deuteranopia (green-blind)

#0075EE

Tritanopia (blue-blind)

#008BA4

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #646cf1;
/* rgb */ color: rgb(100, 108, 241);
/* oklch */ color: oklch(59.7% 0.196 276.1);

Tailwind

colors: {
  custom: {
    50: '#9c96f6',
    500: '#646cf1',
    950: '#000000',
  },
}

SCSS

$custom: #646cf1;
$custom-light: #9c96f6;
$custom-dark: #000000;

JSON

{
  "hex": "#646cf1",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 241
  },
  "hsl": {
    "h": 236.596,
    "s": 83.432,
    "l": 66.863
  },
  "oklch": {
    "l": 0.59664,
    "c": 0.19641,
    "h": 276.1
  },
  "luminance": 0.19785
}

Semantic roles & 50–950 ramp

primary

#646CF1

secondary

#EFECC2

accent

#D306E0

background

#FAF9FF

surface

#F4F2FF

border

#CECCD7

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #646CF1

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

Preview Lab → · Contrast checker → · Palette generator →