#646DA3#646DA3

#646DA3 is a mid, moderate blue. Relative luminance 0.163; OKLCH L 55.0% C 0.085 H 276.0°. Best body text is #FFFFFF at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#646DA3
RGB	rgb(100, 109, 163)
HSL	hsl(231, 26%, 52%)
HSV	hsv(231, 39%, 64%)
CMYK	cmyk(38.7%, 33.1%, 0%, 36.1%)
CIE-LAB	lab(47.35, 10.47, -30.18)
CIE-LCH	lch(47.35, 31.94, 289.13°)
OKLab	oklab(55% 0.0089 -0.0843)
OKLCH	oklch(55% 0.085 276)
XYZ	xyz(17.3331, 16.2902, 36.8743)
Luminance	0.1629 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DA3 #A39A64

analogous

#648DA3 #646DA3 #7B64A3

triadic

#646DA3 #A3646D #6DA364

tetradic

#646DA3 #A3648D #A39A64 #64A37B

square

#646DA3 #A3648D #A39A64 #64A37B

split-complementary

#646DA3 #A37B64 #8DA364

monochromatic

#343958 #4B537F #646DA3 #8A91BA #B1B5D1

Accessibility & contrast

On white

4.93

#646DA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.26

#646DA3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646DA3

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DA3	#FFFFFF	#000000	##FFFFFF
##646DA3	1.00	4.93	4.26	4.93
#FFFFFF	4.93	1.00	21.00	1.00
#000000	4.26	21.00	1.00	21.00
##FFFFFF	4.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B73A5

Deuteranopia (green-blind)

#576EA2

Tritanopia (blue-blind)

#517880

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #646da3;
/* rgb */ color: rgb(100, 109, 163);
/* oklch */ color: oklch(55.0% 0.085 276.0);

Tailwind

colors: {
  custom: {
    50: '#9296be',
    500: '#646da3',
    950: '#000000',
  },
}

SCSS

$custom: #646da3;
$custom-light: #9296be;
$custom-dark: #000000;

JSON

{
  "hex": "#646da3",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 163
  },
  "hsl": {
    "h": 231.429,
    "s": 25.506,
    "l": 51.569
  },
  "oklch": {
    "l": 0.54999,
    "c": 0.08482,
    "h": 276
  },
  "luminance": 0.16291
}

Semantic roles & 50–950 ramp

primary

#646DA3

secondary

#BFBBA4

accent

#B566C2

background

#F9F9FB

surface

#F1F2F7

border

#CBCCD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646DA3

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

Preview Lab → · Contrast checker → · Palette generator →