#647DB4#647DB4

#647DB4 is a mid, moderate blue. Relative luminance 0.207; OKLCH L 59.3% C 0.090 H 265.1°. Best body text is #000000 at 5.13:1 contrast (WCAG AA passes).

Color values

HEX	#647DB4
RGB	rgb(100, 125, 180)
HSL	hsl(221, 35%, 55%)
HSV	hsv(221, 44%, 71%)
CMYK	cmyk(44.4%, 30.6%, 0%, 29.4%)
CIE-LAB	lab(52.59, 5.79, -31.89)
CIE-LCH	lch(52.59, 32.41, 280.30°)
OKLab	oklab(59.31% -0.0077 -0.0893)
OKLCH	oklch(59.31% 0.09 265.1)
XYZ	xyz(20.8247, 20.6707, 46.0637)
Luminance	0.2067 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647DB4 #B49B64

analogous

#64A5B4 #647DB4 #7364B4

triadic

#647DB4 #B4647D #7DB464

tetradic

#647DB4 #B464A5 #B49B64 #64B473

square

#647DB4 #B464A5 #B49B64 #64B473

split-complementary

#647DB4 #B47364 #A5B464

monochromatic

#33456A #475F93 #647DB4 #8DA0C8 #B6C2DC

Accessibility & contrast

On white

4.09

#647DB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.13

#647DB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647DB4

5.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647DB4	#FFFFFF	#000000	##000000
##647DB4	1.00	4.09	5.13	5.13
#FFFFFF	4.09	1.00	21.00	21.00
#000000	5.13	21.00	1.00	1.00
##000000	5.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6981B6

Deuteranopia (green-blind)

#617AB3

Tritanopia (blue-blind)

#478991

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #647db4;
/* rgb */ color: rgb(100, 125, 180);
/* oklch */ color: oklch(59.3% 0.090 265.1);

Tailwind

colors: {
  custom: {
    50: '#94a2ca',
    500: '#647db4',
    950: '#000000',
  },
}

SCSS

$custom: #647db4;
$custom-light: #94a2ca;
$custom-dark: #000000;

JSON

{
  "hex": "#647db4",
  "rgb": {
    "r": 100,
    "g": 125,
    "b": 180
  },
  "hsl": {
    "h": 221.25,
    "s": 34.783,
    "l": 54.902
  },
  "oklch": {
    "l": 0.59314,
    "c": 0.08959,
    "h": 265.1
  },
  "luminance": 0.20672
}

Semantic roles & 50–950 ramp

primary

#647DB4

secondary

#CBC0A9

accent

#A95DCB

background

#F9F9FC

surface

#F2F2F8

border

#CCCCD1

text

#0D0F13

muted

#7E7E82

Preview Lab

Preview with #647DB4

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

Preview Lab → · Contrast checker → · Palette generator →