#647CA4#647CA4

#647CA4 is a mid, moderate blue. Relative luminance 0.198; OKLCH L 58.3% C 0.068 H 260.4°. Best body text is #000000 at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#647CA4
RGB	rgb(100, 124, 164)
HSL	hsl(218, 26%, 52%)
HSV	hsv(218, 39%, 64%)
CMYK	cmyk(39%, 24.4%, 0%, 35.7%)
CIE-LAB	lab(51.61, 1.74, -24.14)
CIE-LCH	lch(51.61, 24.21, 274.12°)
OKLab	oklab(58.33% -0.0113 -0.067)
OKLCH	oklch(58.33% 0.068 260.4)
XYZ	xyz(19.1619, 19.8040, 37.9276)
Luminance	0.1981 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647CA4 #A48C64

analogous

#649CA4 #647CA4 #6C64A4

triadic

#647CA4 #A4647C #7CA464

tetradic

#647CA4 #A4649C #A48C64 #64A46C

square

#647CA4 #A4649C #A48C64 #64A46C

split-complementary

#647CA4 #A46C64 #9CA464

monochromatic

#344259 #4B5F80 #647CA4 #8B9DBB #B1BDD1

Accessibility & contrast

On white

4.23

#647CA4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.96

#647CA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647CA4

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647CA4	#FFFFFF	#000000	##000000
##647CA4	1.00	4.23	4.96	4.96
#FFFFFF	4.23	1.00	21.00	21.00
#000000	4.96	21.00	1.00	1.00
##000000	4.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E7EA6

Deuteranopia (green-blind)

#6778A3

Tritanopia (blue-blind)

#4F848A

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #647ca4;
/* rgb */ color: rgb(100, 124, 164);
/* oklch */ color: oklch(58.3% 0.068 260.4);

Tailwind

colors: {
  custom: {
    50: '#92a1bf',
    500: '#647ca4',
    950: '#000000',
  },
}

SCSS

$custom: #647ca4;
$custom-light: #92a1bf;
$custom-dark: #000000;

JSON

{
  "hex": "#647ca4",
  "rgb": {
    "r": 100,
    "g": 124,
    "b": 164
  },
  "hsl": {
    "h": 217.5,
    "s": 26.016,
    "l": 51.765
  },
  "oklch": {
    "l": 0.58328,
    "c": 0.06797,
    "h": 260.4
  },
  "luminance": 0.19805
}

Semantic roles & 50–950 ramp

primary

#647CA4

secondary

#C0B5A4

accent

#A065C2

background

#F9F9FB

surface

#F1F2F7

border

#CBCCD0

text

#0D0F12

muted

#7E7E81

Preview Lab

Preview with #647CA4

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

Preview Lab → · Contrast checker → · Palette generator →