#646CF3#646CF3

#646CF3 is a mid, vivid blue. Relative luminance 0.199; OKLCH L 59.8% C 0.199 H 276.0°. Best body text is #000000 at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#646CF3
RGB	rgb(100, 108, 243)
HSL	hsl(237, 86%, 67%)
HSV	hsv(237, 59%, 95%)
CMYK	cmyk(58.8%, 55.6%, 0%, 4.7%)
CIE-LAB	lab(51.73, 35.90, -68.96)
CIE-LCH	lch(51.73, 77.75, 297.50°)
OKLab	oklab(59.81% 0.0209 -0.1979)
OKLCH	oklch(59.81% 0.199 276)
XYZ	xyz(26.7905, 19.9035, 87.2066)
Luminance	0.1991 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CF3 #F3EB64

analogous

#64B4F3 #646CF3 #A364F3

triadic

#646CF3 #F3646C #6CF364

tetradic

#646CF3 #F364B4 #F3EB64 #64F3A3

square

#646CF3 #F364B4 #F3EB64 #64F3A3

split-complementary

#646CF3 #F3A364 #B4F364

monochromatic

#101ACD #2B36EF #646CF3 #9DA2F7 #D6D8FC

Accessibility & contrast

On white

4.22

#646CF3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.98

#646CF3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646CF3

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CF3	#FFFFFF	#000000	##000000
##646CF3	1.00	4.22	4.98	4.98
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.98	21.00	1.00	1.00
##000000	4.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0082F8

Deuteranopia (green-blind)

#0075F0

Tritanopia (blue-blind)

#008CA5

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #646cf3;
/* rgb */ color: rgb(100, 108, 243);
/* oklch */ color: oklch(59.8% 0.199 276.0);

Tailwind

colors: {
  custom: {
    50: '#9c96f8',
    500: '#646cf3',
    950: '#000000',
  },
}

SCSS

$custom: #646cf3;
$custom-light: #9c96f8;
$custom-dark: #000000;

JSON

{
  "hex": "#646cf3",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 243
  },
  "hsl": {
    "h": 236.643,
    "s": 85.629,
    "l": 67.255
  },
  "oklch": {
    "l": 0.59809,
    "c": 0.19903,
    "h": 276
  },
  "luminance": 0.19906
}

Semantic roles & 50–950 ramp

primary

#646CF3

secondary

#F0EDC3

accent

#D603E2

background

#FAF9FF

surface

#F4F2FF

border

#CECCD7

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #646CF3

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

Preview Lab → · Contrast checker → · Palette generator →