#646ACE#646ACE

#646ACE is a mid, vivid blue. Relative luminance 0.175; OKLCH L 56.9% C 0.152 H 277.8°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#646ACE
RGB	rgb(100, 106, 206)
HSL	hsl(237, 52%, 60%)
HSV	hsv(237, 51%, 81%)
CMYK	cmyk(51.5%, 48.5%, 0%, 19.2%)
CIE-LAB	lab(48.85, 25.35, -52.72)
CIE-LCH	lch(48.85, 58.50, 295.68°)
OKLab	oklab(56.89% 0.0207 -0.1502)
OKLCH	oklch(56.89% 0.152 277.8)
XYZ	xyz(21.5467, 17.4723, 60.6177)
Luminance	0.1747 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646ACE #CEC864

analogous

#649FCE #646ACE #9364CE

triadic

#646ACE #CE646A #6ACE64

tetradic

#646ACE #CE649F #CEC864 #64CE93

square

#646ACE #CE649F #CEC864 #64CE93

split-complementary

#646ACE #CE9364 #9FCE64

monochromatic

#2C318C #3B42BA #646ACE #9297DD #C1C3EB

Accessibility & contrast

On white

4.67

#646ACE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#646ACE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646ACE

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646ACE	#FFFFFF	#000000	##FFFFFF
##646ACE	1.00	4.67	4.49	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C78D2

Deuteranopia (green-blind)

#3170CC

Tritanopia (blue-blind)

#378092

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #646ace;
/* rgb */ color: rgb(100, 106, 206);
/* oklch */ color: oklch(56.9% 0.152 277.8);

Tailwind

colors: {
  custom: {
    50: '#9794dd',
    500: '#646ace',
    950: '#000000',
  },
}

SCSS

$custom: #646ace;
$custom-light: #9794dd;
$custom-dark: #000000;

JSON

{
  "hex": "#646ace",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 206
  },
  "hsl": {
    "h": 236.604,
    "s": 51.961,
    "l": 60
  },
  "oklch": {
    "l": 0.56889,
    "c": 0.15158,
    "h": 277.8
  },
  "luminance": 0.17474
}

Semantic roles & 50–950 ramp

primary

#646ACE

secondary

#DBD9B2

accent

#D34CDB

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646ACE

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

Preview Lab → · Contrast checker → · Palette generator →