#646DAF#646DAF

#646DAF is a mid, moderate blue. Relative luminance 0.167; OKLCH L 55.6% C 0.103 H 276.6°. Best body text is #FFFFFF at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#646DAF
RGB	rgb(100, 109, 175)
HSL	hsl(233, 32%, 54%)
HSV	hsv(233, 43%, 69%)
CMYK	cmyk(42.9%, 37.7%, 0%, 31.4%)
CIE-LAB	lab(47.93, 13.99, -36.29)
CIE-LCH	lch(47.93, 38.89, 291.08°)
OKLab	oklab(55.64% 0.0119 -0.1021)
OKLCH	oklch(55.64% 0.103 276.6)
XYZ	xyz(18.4597, 16.7409, 42.8078)
Luminance	0.1674 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DAF #AFA664

analogous

#6493AF #646DAF #8164AF

triadic

#646DAF #AF646D #6DAF64

tetradic

#646DAF #AF6493 #AFA664 #64AF81

square

#646DAF #AF6493 #AFA664 #64AF81

split-complementary

#646DAF #AF8164 #93AF64

monochromatic

#343A65 #49518D #646DAF #8C93C4 #B5B9D9

Accessibility & contrast

On white

4.83

#646DAF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.35

#646DAF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646DAF

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DAF	#FFFFFF	#000000	##FFFFFF
##646DAF	1.00	4.83	4.35	4.83
#FFFFFF	4.83	1.00	21.00	1.00
#000000	4.35	21.00	1.00	21.00
##FFFFFF	4.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5675B2

Deuteranopia (green-blind)

#506FAD

Tritanopia (blue-blind)

#4C7A86

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #646daf;
/* rgb */ color: rgb(100, 109, 175);
/* oklch */ color: oklch(55.6% 0.103 276.6);

Tailwind

colors: {
  custom: {
    50: '#9396c7',
    500: '#646daf',
    950: '#000000',
  },
}

SCSS

$custom: #646daf;
$custom-light: #9396c7;
$custom-dark: #000000;

JSON

{
  "hex": "#646daf",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 175
  },
  "hsl": {
    "h": 232.8,
    "s": 31.915,
    "l": 53.922
  },
  "oklch": {
    "l": 0.55635,
    "c": 0.10276,
    "h": 276.6
  },
  "luminance": 0.16742
}

Semantic roles & 50–950 ramp

primary

#646DAF

secondary

#C7C4A7

accent

#BC60C8

background

#F9F9FC

surface

#F2F2F8

border

#CCCCD1

text

#0D0D13

muted

#7E7E82

Preview Lab

Preview with #646DAF

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

Preview Lab → · Contrast checker → · Palette generator →