#646AA1#646AA1

#646AA1 is a mid, moderate blue. Relative luminance 0.156; OKLCH L 54.3% C 0.086 H 278.4°. Best body text is #FFFFFF at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#646AA1
RGB	rgb(100, 106, 161)
HSL	hsl(234, 24%, 51%)
HSV	hsv(234, 38%, 63%)
CMYK	cmyk(37.9%, 34.2%, 0%, 36.9%)
CIE-LAB	lab(46.43, 11.73, -30.44)
CIE-LCH	lch(46.43, 32.62, 291.07°)
OKLab	oklab(54.26% 0.0125 -0.0851)
OKLCH	oklch(54.26% 0.086 278.4)
XYZ	xyz(16.8407, 15.5900, 35.8331)
Luminance	0.1559 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646AA1 #A19B64

analogous

#6488A1 #646AA1 #7C64A1

triadic

#646AA1 #A1646A #6AA164

tetradic

#646AA1 #A16488 #A19B64 #64A17C

square

#646AA1 #A16488 #A19B64 #64A17C

split-complementary

#646AA1 #A17C64 #88A164

monochromatic

#343856 #4B507C #646AA1 #8A8FB8 #B0B3CF

Accessibility & contrast

On white

5.10

#646AA1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.12

#646AA1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646AA1

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646AA1	#FFFFFF	#000000	##FFFFFF
##646AA1	1.00	5.10	4.12	5.10
#FFFFFF	5.10	1.00	21.00	1.00
#000000	4.12	21.00	1.00	21.00
##FFFFFF	5.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5870A3

Deuteranopia (green-blind)

#546CA0

Tritanopia (blue-blind)

#52757E

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #646aa1;
/* rgb */ color: rgb(100, 106, 161);
/* oklch */ color: oklch(54.3% 0.086 278.4);

Tailwind

colors: {
  custom: {
    50: '#9294bd',
    500: '#646aa1',
    950: '#000000',
  },
}

SCSS

$custom: #646aa1;
$custom-light: #9294bd;
$custom-dark: #000000;

JSON

{
  "hex": "#646aa1",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 161
  },
  "hsl": {
    "h": 234.098,
    "s": 24.498,
    "l": 51.176
  },
  "oklch": {
    "l": 0.54257,
    "c": 0.08603,
    "h": 278.4
  },
  "luminance": 0.15591
}

Semantic roles & 50–950 ramp

primary

#646AA1

secondary

#BEBBA3

accent

#B867C1

background

#F9F9FB

surface

#F1F1F6

border

#CBCBD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646AA1

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

Preview Lab → · Contrast checker → · Palette generator →