#647CA7#647CA7

#647CA7 is a mid, moderate blue. Relative luminance 0.199; OKLCH L 58.5% C 0.072 H 261.8°. Best body text is #000000 at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#647CA7
RGB	rgb(100, 124, 167)
HSL	hsl(219, 28%, 52%)
HSV	hsv(219, 40%, 65%)
CMYK	cmyk(40.1%, 25.7%, 0%, 34.5%)
CIE-LAB	lab(51.74, 2.59, -25.69)
CIE-LCH	lch(51.74, 25.82, 275.76°)
OKLab	oklab(58.47% -0.0103 -0.0714)
OKLCH	oklch(58.47% 0.072 261.8)
XYZ	xyz(19.4361, 19.9136, 39.3713)
Luminance	0.1991 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647CA7 #A78F64

analogous

#649EA7 #647CA7 #6D64A7

triadic

#647CA7 #A7647C #7CA764

tetradic

#647CA7 #A7649E #A78F64 #64A76D

square

#647CA7 #A7649E #A78F64 #64A76D

split-complementary

#647CA7 #A76D64 #9EA764

monochromatic

#34435C #4B5F83 #647CA7 #8B9DBD #B2BED3

Accessibility & contrast

On white

4.21

#647CA7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.98

#647CA7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647CA7

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647CA7	#FFFFFF	#000000	##000000
##647CA7	1.00	4.21	4.98	4.98
#FFFFFF	4.21	1.00	21.00	21.00
#000000	4.98	21.00	1.00	1.00
##000000	4.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D7FA9

Deuteranopia (green-blind)

#6679A6

Tritanopia (blue-blind)

#4E858B

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #647ca7;
/* rgb */ color: rgb(100, 124, 167);
/* oklch */ color: oklch(58.5% 0.072 261.8);

Tailwind

colors: {
  custom: {
    50: '#93a1c1',
    500: '#647ca7',
    950: '#000000',
  },
}

SCSS

$custom: #647ca7;
$custom-light: #93a1c1;
$custom-dark: #000000;

JSON

{
  "hex": "#647ca7",
  "rgb": {
    "r": 100,
    "g": 124,
    "b": 167
  },
  "hsl": {
    "h": 218.507,
    "s": 27.572,
    "l": 52.353
  },
  "oklch": {
    "l": 0.58466,
    "c": 0.07219,
    "h": 261.8
  },
  "luminance": 0.19915
}

Semantic roles & 50–950 ramp

primary

#647CA7

secondary

#C2B8A5

accent

#A264C4

background

#F9F9FB

surface

#F1F2F7

border

#CBCCD0

text

#0D0F12

muted

#7E7E81

Preview Lab

Preview with #647CA7

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

Preview Lab → · Contrast checker → · Palette generator →