#646CC3#646CC3

#646CC3 is a mid, vivid blue. Relative luminance 0.174; OKLCH L 56.6% C 0.133 H 277.3°. Best body text is #FFFFFF at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#646CC3
RGB	rgb(100, 108, 195)
HSL	hsl(235, 44%, 58%)
HSV	hsv(235, 49%, 76%)
CMYK	cmyk(48.7%, 44.6%, 0%, 23.5%)
CIE-LAB	lab(48.73, 20.69, -46.61)
CIE-LCH	lch(48.73, 50.99, 293.94°)
OKLab	oklab(56.59% 0.0169 -0.1322)
OKLCH	oklch(56.59% 0.133 277.3)
XYZ	xyz(20.4654, 17.3734, 53.8942)
Luminance	0.1737 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CC3 #C3BB64

analogous

#649CC3 #646CC3 #8B64C3

triadic

#646CC3 #C3646C #6CC364

tetradic

#646CC3 #C3649C #C3BB64 #64C38B

square

#646CC3 #C3649C #C3BB64 #64C38B

split-complementary

#646CC3 #C38B64 #9CC364

monochromatic

#30377C #414AA9 #646CC3 #9096D4 #BCC0E5

Accessibility & contrast

On white

4.69

#646CC3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#646CC3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646CC3

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CC3	#FFFFFF	#000000	##FFFFFF
##646CC3	1.00	4.69	4.47	4.69
#FFFFFF	4.69	1.00	21.00	1.00
#000000	4.47	21.00	1.00	21.00
##FFFFFF	4.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4878C6

Deuteranopia (green-blind)

#4070C1

Tritanopia (blue-blind)

#407E8E

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #646cc3;
/* rgb */ color: rgb(100, 108, 195);
/* oklch */ color: oklch(56.6% 0.133 277.3);

Tailwind

colors: {
  custom: {
    50: '#9696d5',
    500: '#646cc3',
    950: '#000000',
  },
}

SCSS

$custom: #646cc3;
$custom-light: #9696d5;
$custom-dark: #000000;

JSON

{
  "hex": "#646cc3",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 195
  },
  "hsl": {
    "h": 234.947,
    "s": 44.186,
    "l": 57.843
  },
  "oklch": {
    "l": 0.56589,
    "c": 0.13329,
    "h": 277.3
  },
  "luminance": 0.17375
}

Semantic roles & 50–950 ramp

primary

#646CC3

secondary

#D4D1AE

accent

#C954D4

background

#F9F9FD

surface

#F2F1FA

border

#CCCBD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #646CC3

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

Preview Lab → · Contrast checker → · Palette generator →