#646BCA#646BCA

#646BCA is a mid, vivid blue. Relative luminance 0.175; OKLCH L 56.8% C 0.145 H 277.6°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#646BCA
RGB	rgb(100, 107, 202)
HSL	hsl(236, 49%, 59%)
HSV	hsv(236, 50%, 79%)
CMYK	cmyk(50.5%, 47%, 0%, 20.8%)
CIE-LAB	lab(48.87, 23.48, -50.40)
CIE-LCH	lch(48.87, 55.60, 294.98°)
OKLab	oklab(56.83% 0.0191 -0.1433)
OKLCH	oklch(56.83% 0.145 277.6)
XYZ	xyz(21.1706, 17.4877, 58.1256)
Luminance	0.1749 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646BCA #CAC364

analogous

#649ECA #646BCA #9064CA

triadic

#646BCA #CA646B #6BCA64

tetradic

#646BCA #CA649E #CAC364 #64CA90

square

#646BCA #CA649E #CAC364 #64CA90

split-complementary

#646BCA #CA9064 #9ECA64

monochromatic

#2E3486 #3D45B3 #646BCA #9297DA #BFC2E9

Accessibility & contrast

On white

4.67

#646BCA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#646BCA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #646BCA

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

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

Color blindness preview

Protanopia (red-blind)

#4178CD

Deuteranopia (green-blind)

#3770C8

Tritanopia (blue-blind)

#3B7F91

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #646bca;
/* rgb */ color: rgb(100, 107, 202);
/* oklch */ color: oklch(56.8% 0.145 277.6);

Tailwind

colors: {
  custom: {
    50: '#9795db',
    500: '#646bca',
    950: '#000000',
  },
}

SCSS

$custom: #646bca;
$custom-light: #9795db;
$custom-dark: #000000;

JSON

{
  "hex": "#646bca",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 202
  },
  "hsl": {
    "h": 235.882,
    "s": 49.038,
    "l": 59.216
  },
  "oklch": {
    "l": 0.56827,
    "c": 0.14461,
    "h": 277.6
  },
  "luminance": 0.17489
}

Semantic roles & 50–950 ramp

primary

#646BCA

secondary

#D9D6B1

accent

#CF4FD9

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646BCA

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

Preview Lab → · Contrast checker → · Palette generator →