#647BB2#647BB2

#647BB2 is a mid, moderate blue. Relative luminance 0.201; OKLCH L 58.8% C 0.089 H 266.3°. Best body text is #000000 at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#647BB2
RGB	rgb(100, 123, 178)
HSL	hsl(222, 34%, 55%)
HSV	hsv(222, 44%, 70%)
CMYK	cmyk(43.8%, 30.9%, 0%, 30.2%)
CIE-LAB	lab(51.94, 6.39, -31.75)
CIE-LCH	lch(51.94, 32.39, 281.39°)
OKLab	oklab(58.78% -0.0057 -0.0889)
OKLCH	oklch(58.78% 0.089 266.3)
XYZ	xyz(20.3718, 20.0885, 44.9149)
Luminance	0.2009 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647BB2 #B29B64

analogous

#64A2B2 #647BB2 #7464B2

triadic

#647BB2 #B2647B #7BB264

tetradic

#647BB2 #B264A2 #B29B64 #64B274

square

#647BB2 #B264A2 #B29B64 #64B274

split-complementary

#647BB2 #B27464 #A2B264

monochromatic

#344368 #485D91 #647BB2 #8D9EC6 #B6C1DB

Accessibility & contrast

On white

4.18

#647BB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.02

#647BB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647BB2

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647BB2	#FFFFFF	#000000	##000000
##647BB2	1.00	4.18	5.02	5.02
#FFFFFF	4.18	1.00	21.00	21.00
#000000	5.02	21.00	1.00	1.00
##000000	5.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6780B4

Deuteranopia (green-blind)

#6079B1

Tritanopia (blue-blind)

#48868F

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #647bb2;
/* rgb */ color: rgb(100, 123, 178);
/* oklch */ color: oklch(58.8% 0.089 266.3);

Tailwind

colors: {
  custom: {
    50: '#93a1c9',
    500: '#647bb2',
    950: '#000000',
  },
}

SCSS

$custom: #647bb2;
$custom-light: #93a1c9;
$custom-dark: #000000;

JSON

{
  "hex": "#647bb2",
  "rgb": {
    "r": 100,
    "g": 123,
    "b": 178
  },
  "hsl": {
    "h": 222.308,
    "s": 33.621,
    "l": 54.51
  },
  "oklch": {
    "l": 0.58778,
    "c": 0.08905,
    "h": 266.3
  },
  "luminance": 0.2009
}

Semantic roles & 50–950 ramp

primary

#647BB2

secondary

#C9C0A8

accent

#AA5ECA

background

#F9F9FC

surface

#F2F2F8

border

#CCCCD1

text

#0D0E13

muted

#7E7E82

Preview Lab

Preview with #647BB2

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

Preview Lab → · Contrast checker → · Palette generator →