#647DB2#647DB2

#647DB2 is a mid, moderate blue. Relative luminance 0.206; OKLCH L 59.2% C 0.087 H 264.5°. Best body text is #000000 at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#647DB2
RGB	rgb(100, 125, 178)
HSL	hsl(221, 34%, 55%)
HSV	hsv(221, 44%, 70%)
CMYK	cmyk(43.8%, 29.8%, 0%, 30.2%)
CIE-LAB	lab(52.50, 5.20, -30.87)
CIE-LCH	lch(52.50, 31.31, 279.56°)
OKLab	oklab(59.21% -0.0082 -0.0863)
OKLCH	oklch(59.21% 0.087 264.5)
XYZ	xyz(20.6225, 20.5897, 44.9984)
Luminance	0.2059 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647DB2 #B29964

analogous

#64A4B2 #647DB2 #7264B2

triadic

#647DB2 #B2647D #7DB264

tetradic

#647DB2 #B264A4 #B29964 #64B272

square

#647DB2 #B264A4 #B29964 #64B272

split-complementary

#647DB2 #B27264 #A4B264

monochromatic

#344468 #485F91 #647DB2 #8D9FC6 #B6C2DB

Accessibility & contrast

On white

4.10

#647DB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.12

#647DB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647DB2

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647DB2	#FFFFFF	#000000	##000000
##647DB2	1.00	4.10	5.12	5.12
#FFFFFF	4.10	1.00	21.00	21.00
#000000	5.12	21.00	1.00	1.00
##000000	5.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A81B4

Deuteranopia (green-blind)

#627AB1

Tritanopia (blue-blind)

#488890

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #647db2;
/* rgb */ color: rgb(100, 125, 178);
/* oklch */ color: oklch(59.2% 0.087 264.5);

Tailwind

colors: {
  custom: {
    50: '#93a2c9',
    500: '#647db2',
    950: '#000000',
  },
}

SCSS

$custom: #647db2;
$custom-light: #93a2c9;
$custom-dark: #000000;

JSON

{
  "hex": "#647db2",
  "rgb": {
    "r": 100,
    "g": 125,
    "b": 178
  },
  "hsl": {
    "h": 220.769,
    "s": 33.621,
    "l": 54.51
  },
  "oklch": {
    "l": 0.59214,
    "c": 0.08673,
    "h": 264.5
  },
  "luminance": 0.20591
}

Semantic roles & 50–950 ramp

primary

#647DB2

secondary

#C9BFA8

accent

#A75ECA

background

#F9F9FC

surface

#F2F2F8

border

#CCCCD1

text

#0D0F13

muted

#7E7E82

Preview Lab

Preview with #647DB2

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

Preview Lab → · Contrast checker → · Palette generator →