#647BB8#647BB8

#647BB8 is a mid, moderate blue. Relative luminance 0.203; OKLCH L 59.1% C 0.098 H 267.6°. Best body text is #000000 at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#647BB8
RGB	rgb(100, 123, 184)
HSL	hsl(224, 37%, 56%)
HSV	hsv(224, 46%, 72%)
CMYK	cmyk(45.7%, 33.2%, 0%, 27.8%)
CIE-LAB	lab(52.21, 8.19, -34.77)
CIE-LCH	lch(52.21, 35.72, 283.25°)
OKLab	oklab(59.08% -0.004 -0.0976)
OKLCH	oklch(59.08% 0.098 267.6)
XYZ	xyz(20.9875, 20.3347, 48.1572)
Luminance	0.2034 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647BB8 #B8A164

analogous

#64A5B8 #647BB8 #7764B8

triadic

#647BB8 #B8647B #7BB864

tetradic

#647BB8 #B864A5 #B8A164 #64B877

square

#647BB8 #B864A5 #B8A164 #64B877

split-complementary

#647BB8 #B87764 #A5B864

monochromatic

#33436F #465D99 #647BB8 #8E9FCB #B8C2DE

Accessibility & contrast

On white

4.14

#647BB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.07

#647BB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647BB8

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647BB8	#FFFFFF	#000000	##000000
##647BB8	1.00	4.14	5.07	5.07
#FFFFFF	4.14	1.00	21.00	21.00
#000000	5.07	21.00	1.00	1.00
##000000	5.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6581BB

Deuteranopia (green-blind)

#5C79B7

Tritanopia (blue-blind)

#458891

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #647bb8;
/* rgb */ color: rgb(100, 123, 184);
/* oklch */ color: oklch(59.1% 0.098 267.6);

Tailwind

colors: {
  custom: {
    50: '#94a1cd',
    500: '#647bb8',
    950: '#000000',
  },
}

SCSS

$custom: #647bb8;
$custom-light: #94a1cd;
$custom-dark: #000000;

JSON

{
  "hex": "#647bb8",
  "rgb": {
    "r": 100,
    "g": 123,
    "b": 184
  },
  "hsl": {
    "h": 223.571,
    "s": 37.168,
    "l": 55.686
  },
  "oklch": {
    "l": 0.59084,
    "c": 0.0977,
    "h": 267.6
  },
  "luminance": 0.20336
}

Semantic roles & 50–950 ramp

primary

#647BB8

secondary

#CDC4AA

accent

#AE5BCD

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0D0E13

muted

#7E7E82

Preview Lab

Preview with #647BB8

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

Preview Lab → · Contrast checker → · Palette generator →