#646EA7#646EA7

#646EA7 is a mid, moderate blue. Relative luminance 0.167; OKLCH L 55.4% C 0.089 H 275.5°. Best body text is #FFFFFF at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#646EA7
RGB	rgb(100, 110, 167)
HSL	hsl(231, 28%, 52%)
HSV	hsv(231, 40%, 65%)
CMYK	cmyk(40.1%, 34.1%, 0%, 34.5%)
CIE-LAB	lab(47.82, 11.02, -31.80)
CIE-LCH	lch(47.82, 33.65, 289.11°)
OKLab	oklab(55.42% 0.0086 -0.089)
OKLCH	oklch(55.42% 0.089 275.5)
XYZ	xyz(17.8044, 16.6504, 38.8275)
Luminance	0.1665 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646EA7 #A79D64

analogous

#648FA7 #646EA7 #7C64A7

triadic

#646EA7 #A7646E #6EA764

tetradic

#646EA7 #A7648F #A79D64 #64A77C

square

#646EA7 #A7648F #A79D64 #64A77C

split-complementary

#646EA7 #A77C64 #8FA764

monochromatic

#343A5C #4B5383 #646EA7 #8B93BD #B2B7D3

Accessibility & contrast

On white

4.85

#646EA7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.33

#646EA7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646EA7

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646EA7	#FFFFFF	#000000	##FFFFFF
##646EA7	1.00	4.85	4.33	4.85
#FFFFFF	4.85	1.00	21.00	1.00
#000000	4.33	21.00	1.00	21.00
##FFFFFF	4.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B74A9

Deuteranopia (green-blind)

#566FA6

Tritanopia (blue-blind)

#4F7983

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #646ea7;
/* rgb */ color: rgb(100, 110, 167);
/* oklch */ color: oklch(55.4% 0.089 275.5);

Tailwind

colors: {
  custom: {
    50: '#9397c1',
    500: '#646ea7',
    950: '#000000',
  },
}

SCSS

$custom: #646ea7;
$custom-light: #9397c1;
$custom-dark: #000000;

JSON

{
  "hex": "#646ea7",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 167
  },
  "hsl": {
    "h": 231.045,
    "s": 27.572,
    "l": 52.353
  },
  "oklch": {
    "l": 0.55419,
    "c": 0.08945,
    "h": 275.5
  },
  "luminance": 0.16651
}

Semantic roles & 50–950 ramp

primary

#646EA7

secondary

#C2BEA5

accent

#B664C4

background

#F9F9FB

surface

#F1F2F7

border

#CBCCD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646EA7

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

Preview Lab → · Contrast checker → · Palette generator →