#647BBA#647BBA

#647BBA is a mid, moderate blue. Relative luminance 0.204; OKLCH L 59.2% C 0.101 H 268.0°. Best body text is #000000 at 5.08:1 contrast (WCAG AA passes).

Color values

HEX	#647BBA
RGB	rgb(100, 123, 186)
HSL	hsl(224, 38%, 56%)
HSV	hsv(224, 46%, 73%)
CMYK	cmyk(46.2%, 33.9%, 0%, 27.1%)
CIE-LAB	lab(52.31, 8.79, -35.77)
CIE-LCH	lch(52.31, 36.84, 283.81°)
OKLab	oklab(59.19% -0.0035 -0.1005)
OKLCH	oklch(59.19% 0.101 268)
XYZ	xyz(21.1986, 20.4192, 49.2691)
Luminance	0.2042 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647BBA #BAA364

analogous

#64A6BA #647BBA #7864BA

triadic

#647BBA #BA647B #7BBA64

tetradic

#647BBA #BA64A6 #BAA364 #64BA78

square

#647BBA #BA64A6 #BAA364 #64BA78

split-complementary

#647BBA #BA7864 #A6BA64

monochromatic

#324371 #455C9C #647BBA #8E9FCD #B9C3E0

Accessibility & contrast

On white

4.13

#647BBA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.08

#647BBA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647BBA

5.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647BBA	#FFFFFF	#000000	##000000
##647BBA	1.00	4.13	5.08	5.08
#FFFFFF	4.13	1.00	21.00	21.00
#000000	5.08	21.00	1.00	1.00
##000000	5.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6481BD

Deuteranopia (green-blind)

#5B79B9

Tritanopia (blue-blind)

#448892

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #647bba;
/* rgb */ color: rgb(100, 123, 186);
/* oklch */ color: oklch(59.2% 0.101 268.0);

Tailwind

colors: {
  custom: {
    50: '#94a0cf',
    500: '#647bba',
    950: '#000000',
  },
}

SCSS

$custom: #647bba;
$custom-light: #94a0cf;
$custom-dark: #000000;

JSON

{
  "hex": "#647bba",
  "rgb": {
    "r": 100,
    "g": 123,
    "b": 186
  },
  "hsl": {
    "h": 223.953,
    "s": 38.393,
    "l": 56.078
  },
  "oklch": {
    "l": 0.59188,
    "c": 0.10058,
    "h": 268
  },
  "luminance": 0.2042
}

Semantic roles & 50–950 ramp

primary

#647BBA

secondary

#CFC5AB

accent

#AF59CE

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0D0E14

muted

#7E7E82

Preview Lab

Preview with #647BBA

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

Preview Lab → · Contrast checker → · Palette generator →