#646EB0#646EB0

#646EB0 is a mid, moderate blue. Relative luminance 0.170; OKLCH L 55.9% C 0.103 H 276.0°. Best body text is #FFFFFF at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#646EB0
RGB	rgb(100, 110, 176)
HSL	hsl(232, 32%, 54%)
HSV	hsv(232, 43%, 69%)
CMYK	cmyk(43.2%, 37.5%, 0%, 31%)
CIE-LAB	lab(48.25, 13.67, -36.36)
CIE-LCH	lch(48.25, 38.85, 290.61°)
OKLab	oklab(55.9% 0.0108 -0.1023)
OKLCH	oklch(55.9% 0.103 276)
XYZ	xyz(18.6656, 16.9949, 43.3627)
Luminance	0.1700 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646EB0 #B0A664

analogous

#6494B0 #646EB0 #8064B0

triadic

#646EB0 #B0646E #6EB064

tetradic

#646EB0 #B06494 #B0A664 #64B080

square

#646EB0 #B06494 #B0A664 #64B080

split-complementary

#646EB0 #B08064 #94B064

monochromatic

#343A66 #49528E #646EB0 #8D94C5 #B5BAD9

Accessibility & contrast

On white

4.77

#646EB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.40

#646EB0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646EB0

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646EB0	#FFFFFF	#000000	##FFFFFF
##646EB0	1.00	4.77	4.40	4.77
#FFFFFF	4.77	1.00	21.00	1.00
#000000	4.40	21.00	1.00	21.00
##FFFFFF	4.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5776B3

Deuteranopia (green-blind)

#5170AE

Tritanopia (blue-blind)

#4B7B87

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #646eb0;
/* rgb */ color: rgb(100, 110, 176);
/* oklch */ color: oklch(55.9% 0.103 276.0);

Tailwind

colors: {
  custom: {
    50: '#9497c8',
    500: '#646eb0',
    950: '#000000',
  },
}

SCSS

$custom: #646eb0;
$custom-light: #9497c8;
$custom-dark: #000000;

JSON

{
  "hex": "#646eb0",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 176
  },
  "hsl": {
    "h": 232.105,
    "s": 32.479,
    "l": 54.118
  },
  "oklch": {
    "l": 0.55899,
    "c": 0.10285,
    "h": 276
  },
  "luminance": 0.16996
}

Semantic roles & 50–950 ramp

primary

#646EB0

secondary

#C8C4A8

accent

#BB5FC9

background

#F9F9FC

surface

#F2F2F8

border

#CCCCD1

text

#0D0D13

muted

#7E7E82

Preview Lab

Preview with #646EB0

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

Preview Lab → · Contrast checker → · Palette generator →