#647AB2#647AB2

#647AB2 is a mid, moderate blue. Relative luminance 0.198; OKLCH L 58.6% C 0.090 H 267.2°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#647AB2
RGB	rgb(100, 122, 178)
HSL	hsl(223, 34%, 55%)
HSV	hsv(223, 44%, 70%)
CMYK	cmyk(43.8%, 31.5%, 0%, 30.2%)
CIE-LAB	lab(51.66, 6.99, -32.18)
CIE-LCH	lch(51.66, 32.94, 282.26°)
OKLab	oklab(58.56% -0.0044 -0.0901)
OKLCH	oklch(58.56% 0.09 267.2)
XYZ	xyz(20.2484, 19.8416, 44.8737)
Luminance	0.1984 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647AB2 #B29C64

analogous

#64A1B2 #647AB2 #7564B2

triadic

#647AB2 #B2647A #7AB264

tetradic

#647AB2 #B264A1 #B29C64 #64B275

square

#647AB2 #B264A1 #B29C64 #64B275

split-complementary

#647AB2 #B27564 #A1B264

monochromatic

#344268 #485D91 #647AB2 #8D9DC6 #B6C0DB

Accessibility & contrast

On white

4.23

#647AB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#647AB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647AB2

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647AB2	#FFFFFF	#000000	##000000
##647AB2	1.00	4.23	4.97	4.97
#FFFFFF	4.23	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#667FB4

Deuteranopia (green-blind)

#5E78B1

Tritanopia (blue-blind)

#48868E

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #647ab2;
/* rgb */ color: rgb(100, 122, 178);
/* oklch */ color: oklch(58.6% 0.090 267.2);

Tailwind

colors: {
  custom: {
    50: '#93a0c9',
    500: '#647ab2',
    950: '#000000',
  },
}

SCSS

$custom: #647ab2;
$custom-light: #93a0c9;
$custom-dark: #000000;

JSON

{
  "hex": "#647ab2",
  "rgb": {
    "r": 100,
    "g": 122,
    "b": 178
  },
  "hsl": {
    "h": 223.077,
    "s": 33.621,
    "l": 54.51
  },
  "oklch": {
    "l": 0.58561,
    "c": 0.09024,
    "h": 267.2
  },
  "luminance": 0.19843
}

Semantic roles & 50–950 ramp

primary

#647AB2

secondary

#C9C0A8

accent

#AB5ECA

background

#F9F9FC

surface

#F2F2F8

border

#CCCCD1

text

#0D0E13

muted

#7E7E82

Preview Lab

Preview with #647AB2

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

Preview Lab → · Contrast checker → · Palette generator →