#647CDE#647CDE

#647CDE is a mid, vivid blue. Relative luminance 0.224; OKLCH L 61.4% C 0.150 H 271.0°. Best body text is #000000 at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#647CDE
RGB	rgb(100, 124, 222)
HSL	hsl(228, 65%, 63%)
HSV	hsv(228, 55%, 87%)
CMYK	cmyk(55%, 44.1%, 0%, 12.9%)
CIE-LAB	lab(54.45, 19.44, -52.84)
CIE-LCH	lch(54.45, 56.30, 290.20°)
OKLab	oklab(61.44% 0.0027 -0.1504)
OKLCH	oklch(61.44% 0.15 271)
XYZ	xyz(25.6437, 22.3967, 72.0648)
Luminance	0.2240 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647CDE #DEC664

analogous

#64B9DE #647CDE #8964DE

triadic

#647CDE #DE647C #7CDE64

tetradic

#647CDE #DE64B9 #DEC664 #64DE89

square

#647CDE #DE64B9 #DEC664 #64DE89

split-complementary

#647CDE #DE8964 #B9DE64

monochromatic

#233DA5 #3251D3 #647CDE #96A7E9 #C9D1F3

Accessibility & contrast

On white

3.83

#647CDE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.48

#647CDE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647CDE

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647CDE	#FFFFFF	#000000	##000000
##647CDE	1.00	3.83	5.48	5.48
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.48	21.00	1.00	1.00
##000000	5.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5188E2

Deuteranopia (green-blind)

#427DDC

Tritanopia (blue-blind)

#1F92A2

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #647cde;
/* rgb */ color: rgb(100, 124, 222);
/* oklch */ color: oklch(61.4% 0.150 271.0);

Tailwind

colors: {
  custom: {
    50: '#99a1e9',
    500: '#647cde',
    950: '#000000',
  },
}

SCSS

$custom: #647cde;
$custom-light: #99a1e9;
$custom-dark: #000000;

JSON

{
  "hex": "#647cde",
  "rgb": {
    "r": 100,
    "g": 124,
    "b": 222
  },
  "hsl": {
    "h": 228.197,
    "s": 64.894,
    "l": 63.137
  },
  "oklch": {
    "l": 0.61442,
    "c": 0.15038,
    "h": 271
  },
  "luminance": 0.22399
}

Semantic roles & 50–950 ramp

primary

#647CDE

secondary

#E5DCB9

accent

#A919CD

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #647CDE

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

Preview Lab → · Contrast checker → · Palette generator →