#646CAE#646CAE

#646CAE is a mid, moderate blue. Relative luminance 0.165; OKLCH L 55.4% C 0.103 H 277.2°. Best body text is #FFFFFF at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#646CAE
RGB	rgb(100, 108, 174)
HSL	hsl(234, 31%, 54%)
HSV	hsv(234, 43%, 68%)
CMYK	cmyk(42.5%, 37.9%, 0%, 31.8%)
CIE-LAB	lab(47.61, 14.30, -36.21)
CIE-LCH	lch(47.61, 38.93, 291.55°)
OKLab	oklab(55.37% 0.0129 -0.1018)
OKLCH	oklch(55.37% 0.103 277.2)
XYZ	xyz(18.2558, 16.4896, 42.2571)
Luminance	0.1649 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CAE #AEA664

analogous

#6491AE #646CAE #8164AE

triadic

#646CAE #AE646C #6CAE64

tetradic

#646CAE #AE6491 #AEA664 #64AE81

square

#646CAE #AE6491 #AEA664 #64AE81

split-complementary

#646CAE #AE8164 #91AE64

monochromatic

#343964 #49508C #646CAE #8C92C3 #B4B8D8

Accessibility & contrast

On white

4.89

#646CAE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.30

#646CAE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646CAE

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CAE	#FFFFFF	#000000	##FFFFFF
##646CAE	1.00	4.89	4.30	4.89
#FFFFFF	4.89	1.00	21.00	1.00
#000000	4.30	21.00	1.00	21.00
##FFFFFF	4.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5574B1

Deuteranopia (green-blind)

#506EAC

Tritanopia (blue-blind)

#4C7985

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #646cae;
/* rgb */ color: rgb(100, 108, 174);
/* oklch */ color: oklch(55.4% 0.103 277.2);

Tailwind

colors: {
  custom: {
    50: '#9396c6',
    500: '#646cae',
    950: '#000000',
  },
}

SCSS

$custom: #646cae;
$custom-light: #9396c6;
$custom-dark: #000000;

JSON

{
  "hex": "#646cae",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 174
  },
  "hsl": {
    "h": 233.514,
    "s": 31.356,
    "l": 53.725
  },
  "oklch": {
    "l": 0.55372,
    "c": 0.10267,
    "h": 277.2
  },
  "luminance": 0.1649
}

Semantic roles & 50–950 ramp

primary

#646CAE

secondary

#C7C3A7

accent

#BC60C8

background

#F9F9FC

surface

#F2F1F8

border

#CCCBD1

text

#0D0D13

muted

#7E7E82

Preview Lab

Preview with #646CAE

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

Preview Lab → · Contrast checker → · Palette generator →