#646BEF#646BEF

#646BEF is a mid, vivid blue. Relative luminance 0.195; OKLCH L 59.3% C 0.195 H 276.4°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#646BEF
RGB	rgb(100, 107, 239)
HSL	hsl(237, 81%, 66%)
HSV	hsv(237, 58%, 94%)
CMYK	cmyk(58.2%, 55.2%, 0%, 6.3%)
CIE-LAB	lab(51.22, 35.22, -67.56)
CIE-LCH	lch(51.22, 76.19, 297.53°)
OKLab	oklab(59.34% 0.0217 -0.1938)
OKLCH	oklch(59.34% 0.195 276.4)
XYZ	xyz(26.0882, 19.4548, 84.0250)
Luminance	0.1946 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646BEF #EFE864

analogous

#64B1EF #646BEF #A364EF

triadic

#646BEF #EF646B #6BEF64

tetradic

#646BEF #EF64B1 #EFE864 #64EFA3

square

#646BEF #EF64B1 #EFE864 #64EFA3

split-complementary

#646BEF #EFA364 #B1EF64

monochromatic

#141DC4 #2D36E9 #646BEF #9BA0F5 #D3D5FA

Accessibility & contrast

On white

4.29

#646BEF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#646BEF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646BEF

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646BEF	#FFFFFF	#000000	##000000
##646BEF	1.00	4.29	4.89	4.89
#FFFFFF	4.29	1.00	21.00	21.00
#000000	4.89	21.00	1.00	1.00
##000000	4.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0080F4

Deuteranopia (green-blind)

#0074EC

Tritanopia (blue-blind)

#008AA3

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #646bef;
/* rgb */ color: rgb(100, 107, 239);
/* oklch */ color: oklch(59.3% 0.195 276.4);

Tailwind

colors: {
  custom: {
    50: '#9c95f5',
    500: '#646bef',
    950: '#000000',
  },
}

SCSS

$custom: #646bef;
$custom-light: #9c95f5;
$custom-dark: #000000;

JSON

{
  "hex": "#646bef",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 239
  },
  "hsl": {
    "h": 236.978,
    "s": 81.287,
    "l": 66.471
  },
  "oklch": {
    "l": 0.5934,
    "c": 0.19502,
    "h": 276.4
  },
  "luminance": 0.19457
}

Semantic roles & 50–950 ramp

primary

#646BEF

secondary

#EEECC1

accent

#D308DE

background

#FAF9FF

surface

#F4F1FE

border

#CECBD6

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #646BEF

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

Preview Lab → · Contrast checker → · Palette generator →