#646EA0#646EA0

#646EA0 is a mid, moderate blue. Relative luminance 0.164; OKLCH L 55.1% C 0.079 H 274.8°. Best body text is #FFFFFF at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#646EA0
RGB	rgb(100, 110, 160)
HSL	hsl(230, 24%, 51%)
HSV	hsv(230, 38%, 63%)
CMYK	cmyk(37.5%, 31.2%, 0%, 37.3%)
CIE-LAB	lab(47.49, 9.00, -28.20)
CIE-LCH	lch(47.49, 29.60, 287.70°)
OKLab	oklab(55.06% 0.0067 -0.0786)
OKLCH	oklch(55.06% 0.079 274.8)
XYZ	xyz(17.1748, 16.3986, 35.5112)
Luminance	0.1640 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646EA0 #A09664

analogous

#648CA0 #646EA0 #7864A0

triadic

#646EA0 #A0646E #6EA064

tetradic

#646EA0 #A0648C #A09664 #64A078

square

#646EA0 #A0648C #A09664 #64A078

split-complementary

#646EA0 #A07864 #8CA064

monochromatic

#343A55 #4C537B #646EA0 #8A91B7 #B0B5CF

Accessibility & contrast

On white

4.91

#646EA0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.28

#646EA0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646EA0

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646EA0	#FFFFFF	#000000	##FFFFFF
##646EA0	1.00	4.91	4.28	4.91
#FFFFFF	4.91	1.00	21.00	1.00
#000000	4.28	21.00	1.00	21.00
##FFFFFF	4.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E73A2

Deuteranopia (green-blind)

#596E9F

Tritanopia (blue-blind)

#527880

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #646ea0;
/* rgb */ color: rgb(100, 110, 160);
/* oklch */ color: oklch(55.1% 0.079 274.8);

Tailwind

colors: {
  custom: {
    50: '#9297bc',
    500: '#646ea0',
    950: '#000000',
  },
}

SCSS

$custom: #646ea0;
$custom-light: #9297bc;
$custom-dark: #000000;

JSON

{
  "hex": "#646ea0",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 160
  },
  "hsl": {
    "h": 230,
    "s": 24,
    "l": 50.98
  },
  "oklch": {
    "l": 0.55062,
    "c": 0.07892,
    "h": 274.8
  },
  "luminance": 0.16399
}

Semantic roles & 50–950 ramp

primary

#646EA0

secondary

#BDB9A3

accent

#B267C0

background

#F9F9FB

surface

#F1F2F6

border

#CBCCD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646EA0

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

Preview Lab → · Contrast checker → · Palette generator →