#645AA5#645AA5

#645AA5 is a mid, moderate blue. Relative luminance 0.127; OKLCH L 51.2% C 0.116 H 287.7°. Best body text is #FFFFFF at 5.92:1 contrast (WCAG AA passes).

Color values

HEX	#645AA5
RGB	rgb(100, 90, 165)
HSL	hsl(248, 29%, 50%)
HSV	hsv(248, 45%, 65%)
CMYK	cmyk(39.4%, 45.5%, 0%, 35.3%)
CIE-LAB	lab(42.37, 22.77, -39.21)
CIE-LCH	lch(42.37, 45.35, 300.15°)
OKLab	oklab(51.22% 0.0353 -0.1107)
OKLCH	oklch(51.22% 0.116 287.7)
XYZ	xyz(15.7013, 12.7378, 37.2214)
Luminance	0.1274 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645AA5 #9BA55A

analogous

#5A75A5 #645AA5 #8A5AA5

triadic

#645AA5 #A5645A #5AA564

tetradic

#645AA5 #A55A75 #9BA55A #5AA58A

square

#645AA5 #A55A75 #9BA55A #5AA58A

split-complementary

#645AA5 #A58A5A #75A55A

monochromatic

#342F56 #4C447D #645AA5 #8982BB #AEA9D0

Accessibility & contrast

On white

5.92

#645AA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#645AA5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645AA5

5.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645AA5	#FFFFFF	#000000	##FFFFFF
##645AA5	1.00	5.92	3.55	5.92
#FFFFFF	5.92	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F66A8

Deuteranopia (green-blind)

#3F62A3

Tritanopia (blue-blind)

#526977

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #645aa5;
/* rgb */ color: rgb(100, 90, 165);
/* oklch */ color: oklch(51.2% 0.116 287.7);

Tailwind

colors: {
  custom: {
    50: '#9388c0',
    500: '#645aa5',
    950: '#000000',
  },
}

SCSS

$custom: #645aa5;
$custom-light: #9388c0;
$custom-dark: #000000;

JSON

{
  "hex": "#645aa5",
  "rgb": {
    "r": 100,
    "g": 90,
    "b": 165
  },
  "hsl": {
    "h": 248,
    "s": 29.412,
    "l": 50
  },
  "oklch": {
    "l": 0.51218,
    "c": 0.11615,
    "h": 287.7
  },
  "luminance": 0.12738
}

Semantic roles & 50–950 ramp

primary

#645AA5

secondary

#BABE9D

accent

#C662B8

background

#F9F8FB

surface

#F2F0F7

border

#CCCBD0

text

#0D0B12

muted

#7E7C81

Preview Lab

Preview with #645AA5

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

Preview Lab → · Contrast checker → · Palette generator →