#646BD2#646BD2

#646BD2 is a mid, vivid blue. Relative luminance 0.179; OKLCH L 57.3% C 0.156 H 277.4°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#646BD2
RGB	rgb(100, 107, 210)
HSL	hsl(236, 55%, 61%)
HSV	hsv(236, 52%, 82%)
CMYK	cmyk(52.4%, 49%, 0%, 17.6%)
CIE-LAB	lab(49.35, 25.99, -54.21)
CIE-LCH	lch(49.35, 60.12, 295.62°)
OKLab	oklab(57.34% 0.02 -0.1545)
OKLCH	oklch(57.34% 0.156 277.4)
XYZ	xyz(22.1424, 17.8765, 63.2440)
Luminance	0.1788 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646BD2 #D2CB64

analogous

#64A2D2 #646BD2 #9464D2

triadic

#646BD2 #D2646B #6BD264

tetradic

#646BD2 #D264A2 #D2CB64 #64D294

square

#646BD2 #D264A2 #D2CB64 #64D294

split-complementary

#646BD2 #D29464 #A2D264

monochromatic

#2A3191 #3841C1 #646BD2 #9398E0 #C3C6EE

Accessibility & contrast

On white

4.59

#646BD2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.58

#646BD2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #646BD2

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646BD2	#FFFFFF	#000000	##FFFFFF
##646BD2	1.00	4.59	4.58	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.58	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A7AD6

Deuteranopia (green-blind)

#2D71D0

Tritanopia (blue-blind)

#338294

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #646bd2;
/* rgb */ color: rgb(100, 107, 210);
/* oklch */ color: oklch(57.3% 0.156 277.4);

Tailwind

colors: {
  custom: {
    50: '#9895e0',
    500: '#646bd2',
    950: '#000000',
  },
}

SCSS

$custom: #646bd2;
$custom-light: #9895e0;
$custom-dark: #000000;

JSON

{
  "hex": "#646bd2",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 210
  },
  "hsl": {
    "h": 236.182,
    "s": 55,
    "l": 60.784
  },
  "oklch": {
    "l": 0.57341,
    "c": 0.15581,
    "h": 277.4
  },
  "luminance": 0.17878
}

Semantic roles & 50–950 ramp

primary

#646BD2

secondary

#DEDBB4

accent

#B823C3

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646BD2

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

Preview Lab → · Contrast checker → · Palette generator →