#646EB2#646EB2

#646EB2 is a mid, moderate blue. Relative luminance 0.171; OKLCH L 56.0% C 0.106 H 276.1°. Best body text is #FFFFFF at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#646EB2
RGB	rgb(100, 110, 178)
HSL	hsl(232, 34%, 55%)
HSV	hsv(232, 44%, 70%)
CMYK	cmyk(43.8%, 38.2%, 0%, 30.2%)
CIE-LAB	lab(48.35, 14.27, -37.37)
CIE-LCH	lch(48.35, 40.00, 290.90°)
OKLab	oklab(56.01% 0.0112 -0.1052)
OKLCH	oklch(56.01% 0.106 276.1)
XYZ	xyz(18.8649, 17.0746, 44.4126)
Luminance	0.1708 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646EB2 #B2A864

analogous

#6495B2 #646EB2 #8164B2

triadic

#646EB2 #B2646E #6EB264

tetradic

#646EB2 #B26495 #B2A864 #64B281

square

#646EB2 #B26495 #B2A864 #64B281

split-complementary

#646EB2 #B28164 #95B264

monochromatic

#343A68 #485191 #646EB2 #8D94C6 #B6BBDB

Accessibility & contrast

On white

4.76

#646EB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#646EB2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646EB2

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646EB2	#FFFFFF	#000000	##FFFFFF
##646EB2	1.00	4.76	4.42	4.76
#FFFFFF	4.76	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5676B5

Deuteranopia (green-blind)

#5070B0

Tritanopia (blue-blind)

#4A7C87

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #646eb2;
/* rgb */ color: rgb(100, 110, 178);
/* oklch */ color: oklch(56.0% 0.106 276.1);

Tailwind

colors: {
  custom: {
    50: '#9497c9',
    500: '#646eb2',
    950: '#000000',
  },
}

SCSS

$custom: #646eb2;
$custom-light: #9497c9;
$custom-dark: #000000;

JSON

{
  "hex": "#646eb2",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 178
  },
  "hsl": {
    "h": 232.308,
    "s": 33.621,
    "l": 54.51
  },
  "oklch": {
    "l": 0.56009,
    "c": 0.10581,
    "h": 276.1
  },
  "luminance": 0.17076
}

Semantic roles & 50–950 ramp

primary

#646EB2

secondary

#C9C5A8

accent

#BC5ECA

background

#F9F9FC

surface

#F2F2F8

border

#CCCCD1

text

#0D0D13

muted

#7E7E82

Preview Lab

Preview with #646EB2

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

Preview Lab → · Contrast checker → · Palette generator →