#646DA0#646DA0

#646DA0 is a mid, moderate blue. Relative luminance 0.162; OKLCH L 54.8% C 0.080 H 275.8°. Best body text is #FFFFFF at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#646DA0
RGB	rgb(100, 109, 160)
HSL	hsl(231, 24%, 51%)
HSV	hsv(231, 38%, 63%)
CMYK	cmyk(37.5%, 31.9%, 0%, 37.3%)
CIE-LAB	lab(47.22, 9.61, -28.63)
CIE-LCH	lch(47.22, 30.20, 288.55°)
OKLab	oklab(54.85% 0.0081 -0.0799)
OKLCH	oklch(54.85% 0.08 275.8)
XYZ	xyz(17.0675, 16.1840, 35.4754)
Luminance	0.1618 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DA0 #A09764

analogous

#648BA0 #646DA0 #7964A0

triadic

#646DA0 #A0646D #6DA064

tetradic

#646DA0 #A0648B #A09764 #64A079

square

#646DA0 #A0648B #A09764 #64A079

split-complementary

#646DA0 #A07964 #8BA064

monochromatic

#343955 #4C537B #646DA0 #8A91B7 #B0B4CF

Accessibility & contrast

On white

4.96

#646DA0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.24

#646DA0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646DA0

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DA0	#FFFFFF	#000000	##FFFFFF
##646DA0	1.00	4.96	4.24	4.96
#FFFFFF	4.96	1.00	21.00	1.00
#000000	4.24	21.00	1.00	21.00
##FFFFFF	4.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D72A2

Deuteranopia (green-blind)

#586E9F

Tritanopia (blue-blind)

#52777F

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #646da0;
/* rgb */ color: rgb(100, 109, 160);
/* oklch */ color: oklch(54.8% 0.080 275.8);

Tailwind

colors: {
  custom: {
    50: '#9296bc',
    500: '#646da0',
    950: '#000000',
  },
}

SCSS

$custom: #646da0;
$custom-light: #9296bc;
$custom-dark: #000000;

JSON

{
  "hex": "#646da0",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 160
  },
  "hsl": {
    "h": 231,
    "s": 24,
    "l": 50.98
  },
  "oklch": {
    "l": 0.54847,
    "c": 0.0803,
    "h": 275.8
  },
  "luminance": 0.16185
}

Semantic roles & 50–950 ramp

primary

#646DA0

secondary

#BDB9A3

accent

#B367C0

background

#F9F9FB

surface

#F1F2F6

border

#CBCCD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646DA0

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

Preview Lab → · Contrast checker → · Palette generator →