#646FA7#646FA7

#646FA7 is a mid, moderate blue. Relative luminance 0.169; OKLCH L 55.6% C 0.088 H 274.7°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#646FA7
RGB	rgb(100, 111, 167)
HSL	hsl(230, 28%, 52%)
HSV	hsv(230, 40%, 65%)
CMYK	cmyk(40.1%, 33.5%, 0%, 34.5%)
CIE-LAB	lab(48.09, 10.41, -31.37)
CIE-LCH	lch(48.09, 33.05, 288.36°)
OKLab	oklab(55.63% 0.0072 -0.0878)
OKLCH	oklch(55.63% 0.088 274.7)
XYZ	xyz(17.9129, 16.8674, 38.8636)
Luminance	0.1687 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FA7 #A79C64

analogous

#6491A7 #646FA7 #7A64A7

triadic

#646FA7 #A7646F #6FA764

tetradic

#646FA7 #A76491 #A79C64 #64A77A

square

#646FA7 #A76491 #A79C64 #64A77A

split-complementary

#646FA7 #A77A64 #91A764

monochromatic

#343B5C #4B5483 #646FA7 #8B93BD #B2B8D3

Accessibility & contrast

On white

4.80

#646FA7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.37

#646FA7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646FA7

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FA7	#FFFFFF	#000000	##FFFFFF
##646FA7	1.00	4.80	4.37	4.80
#FFFFFF	4.80	1.00	21.00	1.00
#000000	4.37	21.00	1.00	21.00
##FFFFFF	4.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C75A9

Deuteranopia (green-blind)

#5770A6

Tritanopia (blue-blind)

#4F7A83

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #646fa7;
/* rgb */ color: rgb(100, 111, 167);
/* oklch */ color: oklch(55.6% 0.088 274.7);

Tailwind

colors: {
  custom: {
    50: '#9398c1',
    500: '#646fa7',
    950: '#000000',
  },
}

SCSS

$custom: #646fa7;
$custom-light: #9398c1;
$custom-dark: #000000;

JSON

{
  "hex": "#646fa7",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 167
  },
  "hsl": {
    "h": 230.149,
    "s": 27.572,
    "l": 52.353
  },
  "oklch": {
    "l": 0.55632,
    "c": 0.08808,
    "h": 274.7
  },
  "luminance": 0.16868
}

Semantic roles & 50–950 ramp

primary

#646FA7

secondary

#C2BDA5

accent

#B464C4

background

#F9F9FB

surface

#F1F2F7

border

#CBCCD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646FA7

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

Preview Lab → · Contrast checker → · Palette generator →