#646BDE#646BDE

#646BDE is a mid, vivid blue. Relative luminance 0.185; OKLCH L 58.1% C 0.172 H 277.0°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#646BDE
RGB	rgb(100, 107, 222)
HSL	hsl(237, 65%, 63%)
HSV	hsv(237, 55%, 87%)
CMYK	cmyk(55%, 51.8%, 0%, 12.9%)
CIE-LAB	lab(50.09, 29.79, -59.81)
CIE-LCH	lch(50.09, 66.82, 296.48°)
OKLab	oklab(58.14% 0.021 -0.171)
OKLCH	oklch(58.14% 0.172 277)
XYZ	xyz(23.6938, 18.4970, 71.4148)
Luminance	0.1850 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646BDE #DED764

analogous

#64A8DE #646BDE #9A64DE

triadic

#646BDE #DE646B #6BDE64

tetradic

#646BDE #DE64A8 #DED764 #64DE9A

square

#646BDE #DE64A8 #DED764 #64DE9A

split-complementary

#646BDE #DE9A64 #A8DE64

monochromatic

#232AA5 #323BD3 #646BDE #969BE9 #C9CBF3

Accessibility & contrast

On white

4.47

#646BDE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.70

#646BDE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646BDE

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646BDE	#FFFFFF	#000000	##000000
##646BDE	1.00	4.47	4.70	4.70
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.70	21.00	1.00	1.00
##000000	4.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B7CE2

Deuteranopia (green-blind)

#1472DC

Tritanopia (blue-blind)

#25859A

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #646bde;
/* rgb */ color: rgb(100, 107, 222);
/* oklch */ color: oklch(58.1% 0.172 277.0);

Tailwind

colors: {
  custom: {
    50: '#9995e9',
    500: '#646bde',
    950: '#000000',
  },
}

SCSS

$custom: #646bde;
$custom-light: #9995e9;
$custom-dark: #000000;

JSON

{
  "hex": "#646bde",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 222
  },
  "hsl": {
    "h": 236.557,
    "s": 64.894,
    "l": 63.137
  },
  "oklch": {
    "l": 0.58144,
    "c": 0.1723,
    "h": 277
  },
  "luminance": 0.18499
}

Semantic roles & 50–950 ramp

primary

#646BDE

secondary

#E5E2B9

accent

#C219CD

background

#F9F9FE

surface

#F2F1FD

border

#CCCBD5

text

#0F0D16

muted

#7E7E84

Preview Lab

Preview with #646BDE

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

Preview Lab → · Contrast checker → · Palette generator →