#646CA7#646CA7

#646CA7 is a mid, moderate blue. Relative luminance 0.162; OKLCH L 55.0% C 0.092 H 277.0°. Best body text is #FFFFFF at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#646CA7
RGB	rgb(100, 108, 167)
HSL	hsl(233, 28%, 52%)
HSV	hsv(233, 40%, 65%)
CMYK	cmyk(40.1%, 35.3%, 0%, 34.5%)
CIE-LAB	lab(47.27, 12.24, -32.66)
CIE-LCH	lch(47.27, 34.88, 290.55°)
OKLab	oklab(54.99% 0.0113 -0.0915)
OKLCH	oklch(54.99% 0.092 277)
XYZ	xyz(17.5911, 16.2237, 38.7563)
Luminance	0.1622 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CA7 #A79F64

analogous

#648DA7 #646CA7 #7E64A7

triadic

#646CA7 #A7646C #6CA764

tetradic

#646CA7 #A7648D #A79F64 #64A77E

square

#646CA7 #A7648D #A79F64 #64A77E

split-complementary

#646CA7 #A77E64 #8DA764

monochromatic

#34395C #4B5183 #646CA7 #8B91BD #B2B6D3

Accessibility & contrast

On white

4.95

#646CA7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.24

#646CA7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646CA7

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CA7	#FFFFFF	#000000	##FFFFFF
##646CA7	1.00	4.95	4.24	4.95
#FFFFFF	4.95	1.00	21.00	1.00
#000000	4.24	21.00	1.00	21.00
##FFFFFF	4.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5873A9

Deuteranopia (green-blind)

#546EA6

Tritanopia (blue-blind)

#507882

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #646ca7;
/* rgb */ color: rgb(100, 108, 167);
/* oklch */ color: oklch(55.0% 0.092 277.0);

Tailwind

colors: {
  custom: {
    50: '#9396c1',
    500: '#646ca7',
    950: '#000000',
  },
}

SCSS

$custom: #646ca7;
$custom-light: #9396c1;
$custom-dark: #000000;

JSON

{
  "hex": "#646ca7",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 167
  },
  "hsl": {
    "h": 232.836,
    "s": 27.572,
    "l": 52.353
  },
  "oklch": {
    "l": 0.54994,
    "c": 0.09222,
    "h": 277
  },
  "luminance": 0.16224
}

Semantic roles & 50–950 ramp

primary

#646CA7

secondary

#C2BFA5

accent

#B864C4

background

#F9F9FB

surface

#F1F1F7

border

#CBCBD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646CA7

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

Preview Lab → · Contrast checker → · Palette generator →