#647BCB#647BCB

#647BCB is a mid, vivid blue. Relative luminance 0.212; OKLCH L 60.1% C 0.125 H 270.2°. Best body text is #000000 at 5.24:1 contrast (WCAG AA passes).

Color values

HEX	#647BCB
RGB	rgb(100, 123, 203)
HSL	hsl(227, 50%, 59%)
HSV	hsv(227, 51%, 80%)
CMYK	cmyk(50.7%, 39.4%, 0%, 20.4%)
CIE-LAB	lab(53.15, 14.03, -44.16)
CIE-LCH	lch(53.15, 46.33, 287.62°)
OKLab	oklab(60.12% 0.0004 -0.1249)
OKLCH	oklch(60.12% 0.125 270.2)
XYZ	xyz(23.1145, 21.1855, 59.3595)
Luminance	0.2119 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647BCB #CBB464

analogous

#64AFCB #647BCB #8164CB

triadic

#647BCB #CB647B #7BCB64

tetradic

#647BCB #CB64AF #CBB464 #64CB81

square

#647BCB #CB64AF #CBB464 #64CB81

split-complementary

#647BCB #CB8164 #AFCB64

monochromatic

#2D4187 #3D58B5 #647BCB #92A2DA #C0C9EA

Accessibility & contrast

On white

4.01

#647BCB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.24

#647BCB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647BCB

5.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647BCB	#FFFFFF	#000000	##000000
##647BCB	1.00	4.01	5.24	5.24
#FFFFFF	4.01	1.00	21.00	21.00
#000000	5.24	21.00	1.00	1.00
##000000	5.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B84CE

Deuteranopia (green-blind)

#507BC9

Tritanopia (blue-blind)

#378C99

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #647bcb;
/* rgb */ color: rgb(100, 123, 203);
/* oklch */ color: oklch(60.1% 0.125 270.2);

Tailwind

colors: {
  custom: {
    50: '#96a0db',
    500: '#647bcb',
    950: '#000000',
  },
}

SCSS

$custom: #647bcb;
$custom-light: #96a0db;
$custom-dark: #000000;

JSON

{
  "hex": "#647bcb",
  "rgb": {
    "r": 100,
    "g": 123,
    "b": 203
  },
  "hsl": {
    "h": 226.602,
    "s": 49.758,
    "l": 59.412
  },
  "oklch": {
    "l": 0.60116,
    "c": 0.12494,
    "h": 270.2
  },
  "luminance": 0.21187
}

Semantic roles & 50–950 ramp

primary

#647BCB

secondary

#D9D1B1

accent

#BA4FD9

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0E15

muted

#7E7E83

Preview Lab

Preview with #647BCB

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

Preview Lab → · Contrast checker → · Palette generator →