#647CD3#647CD3

#647CD3 is a mid, vivid blue. Relative luminance 0.218; OKLCH L 60.8% C 0.135 H 270.4°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#647CD3
RGB	rgb(100, 124, 211)
HSL	hsl(227, 56%, 61%)
HSV	hsv(227, 53%, 83%)
CMYK	cmyk(52.6%, 41.2%, 0%, 17.3%)
CIE-LAB	lab(53.84, 15.94, -47.60)
CIE-LCH	lch(53.84, 50.19, 288.51°)
OKLab	oklab(60.78% 0.0009 -0.135)
OKLCH	oklch(60.78% 0.135 270.4)
XYZ	xyz(24.2172, 21.8261, 64.5521)
Luminance	0.2183 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647CD3 #D3BB64

analogous

#64B3D3 #647CD3 #8364D3

triadic

#647CD3 #D3647C #7CD364

tetradic

#647CD3 #D364B3 #D3BB64 #64D383

square

#647CD3 #D364B3 #D3BB64 #64D383

split-complementary

#647CD3 #D38364 #B3D364

monochromatic

#2A4093 #3755C3 #647CD3 #94A4E1 #C3CDEE

Accessibility & contrast

On white

3.91

#647CD3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#647CD3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647CD3

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647CD3	#FFFFFF	#000000	##000000
##647CD3	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5886D6

Deuteranopia (green-blind)

#4C7CD1

Tritanopia (blue-blind)

#2F8F9D

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #647cd3;
/* rgb */ color: rgb(100, 124, 211);
/* oklch */ color: oklch(60.8% 0.135 270.4);

Tailwind

colors: {
  custom: {
    50: '#97a1e1',
    500: '#647cd3',
    950: '#000000',
  },
}

SCSS

$custom: #647cd3;
$custom-light: #97a1e1;
$custom-dark: #000000;

JSON

{
  "hex": "#647cd3",
  "rgb": {
    "r": 100,
    "g": 124,
    "b": 211
  },
  "hsl": {
    "h": 227.027,
    "s": 55.779,
    "l": 60.98
  },
  "oklch": {
    "l": 0.60784,
    "c": 0.135,
    "h": 270.4
  },
  "luminance": 0.21828
}

Semantic roles & 50–950 ramp

primary

#647CD3

secondary

#DED5B4

accent

#A022C3

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0E15

muted

#7E7E83

Preview Lab

Preview with #647CD3

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

Preview Lab → · Contrast checker → · Palette generator →