#646FA0#646FA0

#646FA0 is a mid, moderate blue. Relative luminance 0.166; OKLCH L 55.3% C 0.078 H 273.9°. Best body text is #FFFFFF at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#646FA0
RGB	rgb(100, 111, 160)
HSL	hsl(229, 24%, 51%)
HSV	hsv(229, 38%, 63%)
CMYK	cmyk(37.5%, 30.6%, 0%, 37.3%)
CIE-LAB	lab(47.77, 8.39, -27.76)
CIE-LCH	lch(47.77, 29.00, 286.81°)
OKLab	oklab(55.28% 0.0053 -0.0774)
OKLCH	oklch(55.28% 0.078 273.9)
XYZ	xyz(17.2833, 16.6156, 35.5474)
Luminance	0.1662 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FA0 #A09564

analogous

#648DA0 #646FA0 #7764A0

triadic

#646FA0 #A0646F #6FA064

tetradic

#646FA0 #A0648D #A09564 #64A077

square

#646FA0 #A0648D #A09564 #64A077

split-complementary

#646FA0 #A07764 #8DA064

monochromatic

#343A55 #4C547B #646FA0 #8A92B7 #B0B6CF

Accessibility & contrast

On white

4.86

#646FA0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#646FA0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646FA0

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FA0	#FFFFFF	#000000	##FFFFFF
##646FA0	1.00	4.86	4.32	4.86
#FFFFFF	4.86	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F74A2

Deuteranopia (green-blind)

#5B6F9F

Tritanopia (blue-blind)

#527980

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #646fa0;
/* rgb */ color: rgb(100, 111, 160);
/* oklch */ color: oklch(55.3% 0.078 273.9);

Tailwind

colors: {
  custom: {
    50: '#9298bc',
    500: '#646fa0',
    950: '#000000',
  },
}

SCSS

$custom: #646fa0;
$custom-light: #9298bc;
$custom-dark: #000000;

JSON

{
  "hex": "#646fa0",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 160
  },
  "hsl": {
    "h": 229,
    "s": 24,
    "l": 50.98
  },
  "oklch": {
    "l": 0.55278,
    "c": 0.07757,
    "h": 273.9
  },
  "luminance": 0.16616
}

Semantic roles & 50–950 ramp

primary

#646FA0

secondary

#BDB8A3

accent

#B067C0

background

#F9F9FB

surface

#F1F2F6

border

#CBCCD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646FA0

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

Preview Lab → · Contrast checker → · Palette generator →