#646DA1#646DA1

#646DA1 is a mid, moderate blue. Relative luminance 0.162; OKLCH L 54.9% C 0.082 H 275.9°. Best body text is #FFFFFF at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#646DA1
RGB	rgb(100, 109, 161)
HSL	hsl(231, 24%, 51%)
HSV	hsv(231, 38%, 63%)
CMYK	cmyk(37.9%, 32.3%, 0%, 36.9%)
CIE-LAB	lab(47.26, 9.89, -29.15)
CIE-LCH	lch(47.26, 30.78, 288.75°)
OKLab	oklab(54.9% 0.0083 -0.0814)
OKLCH	oklch(54.9% 0.082 275.9)
XYZ	xyz(17.1553, 16.2191, 35.9380)
Luminance	0.1622 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DA1 #A19864

analogous

#648BA1 #646DA1 #7964A1

triadic

#646DA1 #A1646D #6DA164

tetradic

#646DA1 #A1648B #A19864 #64A179

square

#646DA1 #A1648B #A19864 #64A179

split-complementary

#646DA1 #A17964 #8BA164

monochromatic

#343956 #4B537C #646DA1 #8A91B8 #B0B5CF

Accessibility & contrast

On white

4.95

#646DA1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.24

#646DA1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646DA1

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DA1	#FFFFFF	#000000	##FFFFFF
##646DA1	1.00	4.95	4.24	4.95
#FFFFFF	4.95	1.00	21.00	1.00
#000000	4.24	21.00	1.00	21.00
##FFFFFF	4.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C73A3

Deuteranopia (green-blind)

#586EA0

Tritanopia (blue-blind)

#527780

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #646da1;
/* rgb */ color: rgb(100, 109, 161);
/* oklch */ color: oklch(54.9% 0.082 275.9);

Tailwind

colors: {
  custom: {
    50: '#9296bd',
    500: '#646da1',
    950: '#000000',
  },
}

SCSS

$custom: #646da1;
$custom-light: #9296bd;
$custom-dark: #000000;

JSON

{
  "hex": "#646da1",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 161
  },
  "hsl": {
    "h": 231.148,
    "s": 24.498,
    "l": 51.176
  },
  "oklch": {
    "l": 0.54897,
    "c": 0.08181,
    "h": 275.9
  },
  "luminance": 0.1622
}

Semantic roles & 50–950 ramp

primary

#646DA1

secondary

#BEBAA3

accent

#B467C1

background

#F9F9FB

surface

#F1F2F6

border

#CBCCD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646DA1

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

Preview Lab → · Contrast checker → · Palette generator →