#646FCC#646FCC

#646FCC is a mid, vivid blue. Relative luminance 0.184; OKLCH L 57.7% C 0.142 H 275.9°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#646FCC
RGB	rgb(100, 111, 204)
HSL	hsl(234, 50%, 60%)
HSV	hsv(234, 51%, 80%)
CMYK	cmyk(51%, 45.6%, 0%, 20%)
CIE-LAB	lab(50.02, 21.65, -49.70)
CIE-LCH	lch(50.02, 54.22, 293.54°)
OKLab	oklab(57.74% 0.0147 -0.1413)
OKLCH	oklch(57.74% 0.142 275.9)
XYZ	xyz(21.8356, 18.4365, 59.5230)
Luminance	0.1844 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FCC #CCC164

analogous

#64A3CC #646FCC #8D64CC

triadic

#646FCC #CC646F #6FCC64

tetradic

#646FCC #CC64A3 #CCC164 #64CC8D

square

#646FCC #CC64A3 #CCC164 #64CC8D

split-complementary

#646FCC #CC8D64 #A3CC64

monochromatic

#2D3789 #3C49B7 #646FCC #929ADB #C0C5EA

Accessibility & contrast

On white

4.48

#646FCC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#646FCC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646FCC

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FCC	#FFFFFF	#000000	##000000
##646FCC	1.00	4.48	4.69	4.69
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#477BCF

Deuteranopia (green-blind)

#3D73CA

Tritanopia (blue-blind)

#388394

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #646fcc;
/* rgb */ color: rgb(100, 111, 204);
/* oklch */ color: oklch(57.7% 0.142 275.9);

Tailwind

colors: {
  custom: {
    50: '#9798dc',
    500: '#646fcc',
    950: '#000000',
  },
}

SCSS

$custom: #646fcc;
$custom-light: #9798dc;
$custom-dark: #000000;

JSON

{
  "hex": "#646fcc",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 204
  },
  "hsl": {
    "h": 233.654,
    "s": 50.485,
    "l": 59.608
  },
  "oklch": {
    "l": 0.57739,
    "c": 0.14204,
    "h": 275.9
  },
  "luminance": 0.18438
}

Semantic roles & 50–950 ramp

primary

#646FCC

secondary

#DAD6B2

accent

#CB4EDA

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646FCC

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

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