#646EA8#646EA8

#646EA8 is a mid, moderate blue. Relative luminance 0.167; OKLCH L 55.5% C 0.091 H 275.6°. Best body text is #FFFFFF at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#646EA8
RGB	rgb(100, 110, 168)
HSL	hsl(231, 28%, 53%)
HSV	hsv(231, 40%, 66%)
CMYK	cmyk(40.5%, 34.5%, 0%, 34.1%)
CIE-LAB	lab(47.86, 11.31, -32.31)
CIE-LCH	lch(47.86, 34.23, 289.29°)
OKLab	oklab(55.47% 0.0088 -0.0905)
OKLCH	oklch(55.47% 0.091 275.6)
XYZ	xyz(17.8972, 16.6875, 39.3162)
Luminance	0.1669 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646EA8 #A89E64

analogous

#6490A8 #646EA8 #7C64A8

triadic

#646EA8 #A8646E #6EA864

tetradic

#646EA8 #A86490 #A89E64 #64A87C

square

#646EA8 #A86490 #A89E64 #64A87C

split-complementary

#646EA8 #A87C64 #90A864

monochromatic

#343A5D #4A5384 #646EA8 #8B93BE #B2B7D4

Accessibility & contrast

On white

4.84

#646EA8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.34

#646EA8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646EA8

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646EA8	#FFFFFF	#000000	##FFFFFF
##646EA8	1.00	4.84	4.34	4.84
#FFFFFF	4.84	1.00	21.00	1.00
#000000	4.34	21.00	1.00	21.00
##FFFFFF	4.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A74AA

Deuteranopia (green-blind)

#556FA7

Tritanopia (blue-blind)

#4F7A83

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #646ea8;
/* rgb */ color: rgb(100, 110, 168);
/* oklch */ color: oklch(55.5% 0.091 275.6);

Tailwind

colors: {
  custom: {
    50: '#9397c2',
    500: '#646ea8',
    950: '#000000',
  },
}

SCSS

$custom: #646ea8;
$custom-light: #9397c2;
$custom-dark: #000000;

JSON

{
  "hex": "#646ea8",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 168
  },
  "hsl": {
    "h": 231.176,
    "s": 28.099,
    "l": 52.549
  },
  "oklch": {
    "l": 0.55471,
    "c": 0.09095,
    "h": 275.6
  },
  "luminance": 0.16688
}

Semantic roles & 50–950 ramp

primary

#646EA8

secondary

#C3BEA5

accent

#B663C4

background

#F9F9FB

surface

#F1F2F7

border

#CBCCD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646EA8

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

Preview Lab → · Contrast checker → · Palette generator →