#646ACF#646ACF

#646ACF is a mid, vivid blue. Relative luminance 0.175; OKLCH L 57.0% C 0.153 H 277.8°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#646ACF
RGB	rgb(100, 106, 207)
HSL	hsl(237, 53%, 60%)
HSV	hsv(237, 52%, 81%)
CMYK	cmyk(51.7%, 48.8%, 0%, 18.8%)
CIE-LAB	lab(48.91, 25.66, -53.19)
CIE-LCH	lch(48.91, 59.06, 295.75°)
OKLab	oklab(56.95% 0.0208 -0.1516)
OKLCH	oklch(56.95% 0.153 277.8)
XYZ	xyz(21.6685, 17.5211, 61.2595)
Luminance	0.1752 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646ACF #CFC964

analogous

#649FCF #646ACF #9464CF

triadic

#646ACF #CF646A #6ACF64

tetradic

#646ACF #CF649F #CFC964 #64CF94

square

#646ACF #CF649F #CFC964 #64CF94

split-complementary

#646ACF #CF9464 #9FCF64

monochromatic

#2C318D #3A41BC #646ACF #9397DD #C1C4EC

Accessibility & contrast

On white

4.66

#646ACF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#646ACF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #646ACF

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646ACF	#FFFFFF	#000000	##FFFFFF
##646ACF	1.00	4.66	4.50	4.66
#FFFFFF	4.66	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B79D3

Deuteranopia (green-blind)

#2F70CD

Tritanopia (blue-blind)

#368093

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #646acf;
/* rgb */ color: rgb(100, 106, 207);
/* oklch */ color: oklch(57.0% 0.153 277.8);

Tailwind

colors: {
  custom: {
    50: '#9794de',
    500: '#646acf',
    950: '#000000',
  },
}

SCSS

$custom: #646acf;
$custom-light: #9794de;
$custom-dark: #000000;

JSON

{
  "hex": "#646acf",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 207
  },
  "hsl": {
    "h": 236.636,
    "s": 52.709,
    "l": 60.196
  },
  "oklch": {
    "l": 0.56954,
    "c": 0.15299,
    "h": 277.8
  },
  "luminance": 0.17522
}

Semantic roles & 50–950 ramp

primary

#646ACF

secondary

#DCDAB3

accent

#B725C0

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646ACF

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

Preview Lab → · Contrast checker → · Palette generator →