#646CCC#646CCC

#646CCC is a mid, vivid blue. Relative luminance 0.178; OKLCH L 57.1% C 0.146 H 277.1°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#646CCC
RGB	rgb(100, 108, 204)
HSL	hsl(235, 50%, 60%)
HSV	hsv(235, 51%, 80%)
CMYK	cmyk(51%, 47.1%, 0%, 20%)
CIE-LAB	lab(49.24, 23.49, -50.95)
CIE-LCH	lch(49.24, 56.10, 294.76°)
OKLab	oklab(57.15% 0.0181 -0.1449)
OKLCH	oklch(57.15% 0.146 277.1)
XYZ	xyz(21.5138, 17.7928, 59.4157)
Luminance	0.1779 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CCC #CCC464

analogous

#64A0CC #646CCC #9064CC

triadic

#646CCC #CC646C #6CCC64

tetradic

#646CCC #CC64A0 #CCC464 #64CC90

square

#646CCC #CC64A0 #CCC464 #64CC90

split-complementary

#646CCC #CC9064 #A0CC64

monochromatic

#2D3489 #3C46B7 #646CCC #9298DB #C0C3EA

Accessibility & contrast

On white

4.61

#646CCC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#646CCC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #646CCC

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CCC	#FFFFFF	#000000	##FFFFFF
##646CCC	1.00	4.61	4.56	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4179D0

Deuteranopia (green-blind)

#3771CA

Tritanopia (blue-blind)

#398192

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #646ccc;
/* rgb */ color: rgb(100, 108, 204);
/* oklch */ color: oklch(57.1% 0.146 277.1);

Tailwind

colors: {
  custom: {
    50: '#9796dc',
    500: '#646ccc',
    950: '#000000',
  },
}

SCSS

$custom: #646ccc;
$custom-light: #9796dc;
$custom-dark: #000000;

JSON

{
  "hex": "#646ccc",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 204
  },
  "hsl": {
    "h": 235.385,
    "s": 50.485,
    "l": 59.608
  },
  "oklch": {
    "l": 0.57149,
    "c": 0.14607,
    "h": 277.1
  },
  "luminance": 0.17794
}

Semantic roles & 50–950 ramp

primary

#646CCC

secondary

#DAD7B2

accent

#CF4EDA

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646CCC

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

Preview Lab → · Contrast checker → · Palette generator →