#647BBC#647BBC

#647BBC is a mid, moderate blue. Relative luminance 0.205; OKLCH L 59.3% C 0.103 H 268.3°. Best body text is #000000 at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#647BBC
RGB	rgb(100, 123, 188)
HSL	hsl(224, 40%, 56%)
HSV	hsv(224, 47%, 74%)
CMYK	cmyk(46.8%, 34.6%, 0%, 26.3%)
CIE-LAB	lab(52.40, 9.40, -36.77)
CIE-LCH	lch(52.40, 37.95, 284.34°)
OKLab	oklab(59.29% -0.003 -0.1034)
OKLCH	oklch(59.29% 0.103 268.3)
XYZ	xyz(21.4127, 20.5048, 50.3967)
Luminance	0.2051 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647BBC #BCA564

analogous

#64A7BC #647BBC #7964BC

triadic

#647BBC #BC647B #7BBC64

tetradic

#647BBC #BC64A7 #BCA564 #64BC79

square

#647BBC #BC64A7 #BCA564 #64BC79

split-complementary

#647BBC #BC7964 #A7BC64

monochromatic

#324374 #445C9E #647BBC #8F9FCE #B9C4E1

Accessibility & contrast

On white

4.12

#647BBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.10

#647BBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647BBC

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647BBC	#FFFFFF	#000000	##000000
##647BBC	1.00	4.12	5.10	5.10
#FFFFFF	4.12	1.00	21.00	21.00
#000000	5.10	21.00	1.00	1.00
##000000	5.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6381BF

Deuteranopia (green-blind)

#5A79BB

Tritanopia (blue-blind)

#428993

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #647bbc;
/* rgb */ color: rgb(100, 123, 188);
/* oklch */ color: oklch(59.3% 0.103 268.3);

Tailwind

colors: {
  custom: {
    50: '#94a0d0',
    500: '#647bbc',
    950: '#000000',
  },
}

SCSS

$custom: #647bbc;
$custom-light: #94a0d0;
$custom-dark: #000000;

JSON

{
  "hex": "#647bbc",
  "rgb": {
    "r": 100,
    "g": 123,
    "b": 188
  },
  "hsl": {
    "h": 224.318,
    "s": 39.64,
    "l": 56.471
  },
  "oklch": {
    "l": 0.59293,
    "c": 0.10346,
    "h": 268.3
  },
  "luminance": 0.20506
}

Semantic roles & 50–950 ramp

primary

#647BBC

secondary

#D0C7AC

accent

#B058D0

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0E0E14

muted

#7E7E82

Preview Lab

Preview with #647BBC

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

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