#646DA2#646DA2

#646DA2 is a mid, moderate blue. Relative luminance 0.163; OKLCH L 54.9% C 0.083 H 275.9°. Best body text is #FFFFFF at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#646DA2
RGB	rgb(100, 109, 162)
HSL	hsl(231, 25%, 51%)
HSV	hsv(231, 38%, 64%)
CMYK	cmyk(38.3%, 32.7%, 0%, 36.5%)
CIE-LAB	lab(47.31, 10.18, -29.66)
CIE-LCH	lch(47.31, 31.36, 288.94°)
OKLab	oklab(54.95% 0.0086 -0.0829)
OKLCH	oklch(54.95% 0.083 275.9)
XYZ	xyz(17.2439, 16.2545, 36.4043)
Luminance	0.1626 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DA2 #A29964

analogous

#648CA2 #646DA2 #7A64A2

triadic

#646DA2 #A2646D #6DA264

tetradic

#646DA2 #A2648C #A29964 #64A27A

square

#646DA2 #A2648C #A29964 #64A27A

split-complementary

#646DA2 #A27A64 #8CA264

monochromatic

#343957 #4B537E #646DA2 #8A91B9 #B1B5D0

Accessibility & contrast

On white

4.94

#646DA2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.25

#646DA2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646DA2

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DA2	#FFFFFF	#000000	##FFFFFF
##646DA2	1.00	4.94	4.25	4.94
#FFFFFF	4.94	1.00	21.00	1.00
#000000	4.25	21.00	1.00	21.00
##FFFFFF	4.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C73A4

Deuteranopia (green-blind)

#576EA1

Tritanopia (blue-blind)

#527780

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #646da2;
/* rgb */ color: rgb(100, 109, 162);
/* oklch */ color: oklch(54.9% 0.083 275.9);

Tailwind

colors: {
  custom: {
    50: '#9296bd',
    500: '#646da2',
    950: '#000000',
  },
}

SCSS

$custom: #646da2;
$custom-light: #9296bd;
$custom-dark: #000000;

JSON

{
  "hex": "#646da2",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 162
  },
  "hsl": {
    "h": 231.29,
    "s": 25,
    "l": 51.373
  },
  "oklch": {
    "l": 0.54948,
    "c": 0.08332,
    "h": 275.9
  },
  "luminance": 0.16255
}

Semantic roles & 50–950 ramp

primary

#646DA2

secondary

#BFBBA3

accent

#B466C1

background

#F9F9FB

surface

#F1F2F6

border

#CBCCD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646DA2

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

Preview Lab → · Contrast checker → · Palette generator →