#646FCA#646FCA

#646FCA is a mid, vivid blue. Relative luminance 0.183; OKLCH L 57.6% C 0.139 H 275.9°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#646FCA
RGB	rgb(100, 111, 202)
HSL	hsl(234, 49%, 59%)
HSV	hsv(234, 50%, 79%)
CMYK	cmyk(50.5%, 45%, 0%, 20.8%)
CIE-LAB	lab(49.91, 21.03, -48.74)
CIE-LCH	lch(49.91, 53.08, 293.34°)
OKLab	oklab(57.62% 0.0144 -0.1385)
OKLCH	oklch(57.62% 0.139 275.9)
XYZ	xyz(21.5973, 18.3412, 58.2678)
Luminance	0.1834 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FCA #CABF64

analogous

#64A2CA #646FCA #8C64CA

triadic

#646FCA #CA646F #6FCA64

tetradic

#646FCA #CA64A2 #CABF64 #64CA8C

square

#646FCA #CA64A2 #CABF64 #64CA8C

split-complementary

#646FCA #CA8C64 #A2CA64

monochromatic

#2E3786 #3D4AB3 #646FCA #9299DA #BFC4E9

Accessibility & contrast

On white

4.50

#646FCA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.67

#646FCA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646FCA

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FCA	#FFFFFF	#000000	##000000
##646FCA	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)

#497BCD

Deuteranopia (green-blind)

#3F73C8

Tritanopia (blue-blind)

#3A8393

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #646fca;
/* rgb */ color: rgb(100, 111, 202);
/* oklch */ color: oklch(57.6% 0.139 275.9);

Tailwind

colors: {
  custom: {
    50: '#9698da',
    500: '#646fca',
    950: '#000000',
  },
}

SCSS

$custom: #646fca;
$custom-light: #9698da;
$custom-dark: #000000;

JSON

{
  "hex": "#646fca",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 202
  },
  "hsl": {
    "h": 233.529,
    "s": 49.038,
    "l": 59.216
  },
  "oklch": {
    "l": 0.57615,
    "c": 0.13921,
    "h": 275.9
  },
  "luminance": 0.18342
}

Semantic roles & 50–950 ramp

primary

#646FCA

secondary

#D9D5B1

accent

#CA4FD9

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646FCA

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

Preview Lab → · Contrast checker → · Palette generator →