#646ADF#646ADF

#646ADF is a mid, vivid blue. Relative luminance 0.183; OKLCH L 58.0% C 0.175 H 277.2°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#646ADF
RGB	rgb(100, 106, 223)
HSL	hsl(237, 66%, 63%)
HSV	hsv(237, 55%, 87%)
CMYK	cmyk(55.2%, 52.5%, 0%, 12.5%)
CIE-LAB	lab(49.91, 30.72, -60.68)
CIE-LCH	lch(49.91, 68.01, 296.85°)
OKLab	oklab(58.03% 0.0221 -0.1736)
OKLCH	oklch(58.03% 0.175 277.2)
XYZ	xyz(23.7246, 18.3435, 72.0882)
Luminance	0.1835 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646ADF #DFD964

analogous

#64A7DF #646ADF #9B64DF

triadic

#646ADF #DF646A #6ADF64

tetradic

#646ADF #DF64A7 #DFD964 #64DF9B

square

#646ADF #DF64A7 #DFD964 #64DF9B

split-complementary

#646ADF #DF9B64 #A7DF64

monochromatic

#2229A6 #3139D5 #646ADF #979BE9 #C9CCF4

Accessibility & contrast

On white

4.50

#646ADF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.67

#646ADF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646ADF

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646ADF	#FFFFFF	#000000	##000000
##646ADF	1.00	4.50	4.67	4.67
#FFFFFF	4.50	1.00	21.00	21.00
#000000	4.67	21.00	1.00	1.00
##000000	4.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#277CE3

Deuteranopia (green-blind)

#0972DD

Tritanopia (blue-blind)

#23859A

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #646adf;
/* rgb */ color: rgb(100, 106, 223);
/* oklch */ color: oklch(58.0% 0.175 277.2);

Tailwind

colors: {
  custom: {
    50: '#9994ea',
    500: '#646adf',
    950: '#000000',
  },
}

SCSS

$custom: #646adf;
$custom-light: #9994ea;
$custom-dark: #000000;

JSON

{
  "hex": "#646adf",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 223
  },
  "hsl": {
    "h": 237.073,
    "s": 65.775,
    "l": 63.333
  },
  "oklch": {
    "l": 0.58027,
    "c": 0.17497,
    "h": 277.2
  },
  "luminance": 0.18345
}

Semantic roles & 50–950 ramp

primary

#646ADF

secondary

#E5E3B9

accent

#C518CE

background

#FAF9FE

surface

#F3F1FD

border

#CDCBD5

text

#0F0D16

muted

#7F7E84

Preview Lab

Preview with #646ADF

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

Preview Lab → · Contrast checker → · Palette generator →