#646CCB#646CCB

#646CCB is a mid, vivid blue. Relative luminance 0.177; OKLCH L 57.1% C 0.145 H 277.2°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#646CCB
RGB	rgb(100, 108, 203)
HSL	hsl(235, 50%, 59%)
HSV	hsv(235, 51%, 80%)
CMYK	cmyk(50.7%, 46.8%, 0%, 20.4%)
CIE-LAB	lab(49.19, 23.18, -50.47)
CIE-LCH	lch(49.19, 55.54, 294.67°)
OKLab	oklab(57.09% 0.018 -0.1435)
OKLCH	oklch(57.09% 0.145 277.2)
XYZ	xyz(21.3942, 17.7450, 58.7861)
Luminance	0.1775 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CCB #CBC364

analogous

#64A0CB #646CCB #9064CB

triadic

#646CCB #CB646C #6CCB64

tetradic

#646CCB #CB64A0 #CBC364 #64CB90

square

#646CCB #CB64A0 #CBC364 #64CB90

split-complementary

#646CCB #CB9064 #A0CB64

monochromatic

#2D3487 #3D46B5 #646CCB #9297DA #C0C3EA

Accessibility & contrast

On white

4.62

#646CCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#646CCB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #646CCB

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CCB	#FFFFFF	#000000	##FFFFFF
##646CCB	1.00	4.62	4.55	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4279CE

Deuteranopia (green-blind)

#3871C9

Tritanopia (blue-blind)

#3A8192

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #646ccb;
/* rgb */ color: rgb(100, 108, 203);
/* oklch */ color: oklch(57.1% 0.145 277.2);

Tailwind

colors: {
  custom: {
    50: '#9796db',
    500: '#646ccb',
    950: '#000000',
  },
}

SCSS

$custom: #646ccb;
$custom-light: #9796db;
$custom-dark: #000000;

JSON

{
  "hex": "#646ccb",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 203
  },
  "hsl": {
    "h": 235.34,
    "s": 49.758,
    "l": 59.412
  },
  "oklch": {
    "l": 0.57086,
    "c": 0.14467,
    "h": 277.2
  },
  "luminance": 0.17746
}

Semantic roles & 50–950 ramp

primary

#646CCB

secondary

#D9D6B1

accent

#CF4FD9

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646CCB

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

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