#647DBA#647DBA

#647DBA is a mid, moderate blue. Relative luminance 0.209; OKLCH L 59.6% C 0.098 H 266.5°. Best body text is #000000 at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#647DBA
RGB	rgb(100, 125, 186)
HSL	hsl(223, 38%, 56%)
HSV	hsv(223, 46%, 73%)
CMYK	cmyk(46.2%, 32.8%, 0%, 27.1%)
CIE-LAB	lab(52.86, 7.59, -34.90)
CIE-LCH	lch(52.86, 35.72, 282.27°)
OKLab	oklab(59.62% -0.006 -0.098)
OKLCH	oklch(59.62% 0.098 266.5)
XYZ	xyz(21.4492, 20.9204, 49.3527)
Luminance	0.2092 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647DBA #BAA164

analogous

#64A8BA #647DBA #7664BA

triadic

#647DBA #BA647D #7DBA64

tetradic

#647DBA #BA64A8 #BAA164 #64BA76

square

#647DBA #BA64A8 #BAA164 #64BA76

split-complementary

#647DBA #BA7664 #A8BA64

monochromatic

#324571 #455E9C #647DBA #8EA1CD #B9C4E0

Accessibility & contrast

On white

4.05

#647DBA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.18

#647DBA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647DBA

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647DBA	#FFFFFF	#000000	##000000
##647DBA	1.00	4.05	5.18	5.18
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.18	21.00	1.00	1.00
##000000	5.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6782BD

Deuteranopia (green-blind)

#5E7BB9

Tritanopia (blue-blind)

#438A93

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #647dba;
/* rgb */ color: rgb(100, 125, 186);
/* oklch */ color: oklch(59.6% 0.098 266.5);

Tailwind

colors: {
  custom: {
    50: '#94a2cf',
    500: '#647dba',
    950: '#000000',
  },
}

SCSS

$custom: #647dba;
$custom-light: #94a2cf;
$custom-dark: #000000;

JSON

{
  "hex": "#647dba",
  "rgb": {
    "r": 100,
    "g": 125,
    "b": 186
  },
  "hsl": {
    "h": 222.558,
    "s": 38.393,
    "l": 56.078
  },
  "oklch": {
    "l": 0.59618,
    "c": 0.09817,
    "h": 266.5
  },
  "luminance": 0.20922
}

Semantic roles & 50–950 ramp

primary

#647DBA

secondary

#CFC4AB

accent

#AC59CE

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0D0F14

muted

#7E7E82

Preview Lab

Preview with #647DBA

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

Preview Lab → · Contrast checker → · Palette generator →