#646DA8#646DA8

#646DA8 is a mid, moderate blue. Relative luminance 0.165; OKLCH L 55.3% C 0.092 H 276.3°. Best body text is #FFFFFF at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#646DA8
RGB	rgb(100, 109, 168)
HSL	hsl(232, 28%, 53%)
HSV	hsv(232, 40%, 66%)
CMYK	cmyk(40.5%, 35.1%, 0%, 34.1%)
CIE-LAB	lab(47.59, 11.92, -32.74)
CIE-LCH	lch(47.59, 34.84, 290.01°)
OKLab	oklab(55.26% 0.0102 -0.0918)
OKLCH	oklch(55.26% 0.092 276.3)
XYZ	xyz(17.7900, 16.4730, 39.2804)
Luminance	0.1647 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DA8 #A89F64

analogous

#648FA8 #646DA8 #7D64A8

triadic

#646DA8 #A8646D #6DA864

tetradic

#646DA8 #A8648F #A89F64 #64A87D

square

#646DA8 #A8648F #A89F64 #64A87D

split-complementary

#646DA8 #A87D64 #8FA864

monochromatic

#343A5D #4A5284 #646DA8 #8B92BE #B2B7D4

Accessibility & contrast

On white

4.89

#646DA8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.29

#646DA8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646DA8

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DA8	#FFFFFF	#000000	##FFFFFF
##646DA8	1.00	4.89	4.29	4.89
#FFFFFF	4.89	1.00	21.00	1.00
#000000	4.29	21.00	1.00	21.00
##FFFFFF	4.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5974AA

Deuteranopia (green-blind)

#546EA7

Tritanopia (blue-blind)

#4F7983

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #646da8;
/* rgb */ color: rgb(100, 109, 168);
/* oklch */ color: oklch(55.3% 0.092 276.3);

Tailwind

colors: {
  custom: {
    50: '#9396c2',
    500: '#646da8',
    950: '#000000',
  },
}

SCSS

$custom: #646da8;
$custom-light: #9396c2;
$custom-dark: #000000;

JSON

{
  "hex": "#646da8",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 168
  },
  "hsl": {
    "h": 232.059,
    "s": 28.099,
    "l": 52.549
  },
  "oklch": {
    "l": 0.55259,
    "c": 0.09232,
    "h": 276.3
  },
  "luminance": 0.16474
}

Semantic roles & 50–950 ramp

primary

#646DA8

secondary

#C3BFA5

accent

#B863C4

background

#F9F9FB

surface

#F1F2F7

border

#CBCCD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646DA8

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

Preview Lab → · Contrast checker → · Palette generator →