#646CB8#646CB8

#646CB8 is a mid, moderate blue. Relative luminance 0.169; OKLCH L 55.9% C 0.117 H 277.3°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#646CB8
RGB	rgb(100, 108, 184)
HSL	hsl(234, 37%, 56%)
HSV	hsv(234, 46%, 72%)
CMYK	cmyk(45.7%, 41.3%, 0%, 27.8%)
CIE-LAB	lab(48.13, 17.31, -41.21)
CIE-LCH	lch(48.13, 44.70, 292.78°)
OKLab	oklab(55.94% 0.015 -0.1164)
OKLCH	oklch(55.94% 0.117 277.3)
XYZ	xyz(19.2672, 16.8942, 47.5838)
Luminance	0.1689 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CB8 #B8B064

analogous

#6496B8 #646CB8 #8664B8

triadic

#646CB8 #B8646C #6CB864

tetradic

#646CB8 #B86496 #B8B064 #64B886

square

#646CB8 #B86496 #B8B064 #64B886

split-complementary

#646CB8 #B88664 #96B864

monochromatic

#33386F #464E99 #646CB8 #8E94CB #B8BCDE

Accessibility & contrast

On white

4.80

#646CB8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.38

#646CB8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646CB8

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CB8	#FFFFFF	#000000	##FFFFFF
##646CB8	1.00	4.80	4.38	4.80
#FFFFFF	4.80	1.00	21.00	1.00
#000000	4.38	21.00	1.00	21.00
##FFFFFF	4.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F76BB

Deuteranopia (green-blind)

#496FB6

Tritanopia (blue-blind)

#477C89

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #646cb8;
/* rgb */ color: rgb(100, 108, 184);
/* oklch */ color: oklch(55.9% 0.117 277.3);

Tailwind

colors: {
  custom: {
    50: '#9496ce',
    500: '#646cb8',
    950: '#000000',
  },
}

SCSS

$custom: #646cb8;
$custom-light: #9496ce;
$custom-dark: #000000;

JSON

{
  "hex": "#646cb8",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 184
  },
  "hsl": {
    "h": 234.286,
    "s": 37.168,
    "l": 55.686
  },
  "oklch": {
    "l": 0.55936,
    "c": 0.11739,
    "h": 277.3
  },
  "luminance": 0.16895
}

Semantic roles & 50–950 ramp

primary

#646CB8

secondary

#CDCAAA

accent

#C25BCD

background

#F9F9FC

surface

#F2F1F9

border

#CCCBD2

text

#0E0D13

muted

#7E7E82

Preview Lab

Preview with #646CB8

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

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