#645BD6#645BD6

#645BD6 is a mid, vivid blue. Relative luminance 0.150; OKLCH L 54.7% C 0.183 H 281.8°. Best body text is #FFFFFF at 5.24:1 contrast (WCAG AA passes).

Color values

HEX	#645BD6
RGB	rgb(100, 91, 214)
HSL	hsl(244, 60%, 60%)
HSV	hsv(244, 57%, 84%)
CMYK	cmyk(53.3%, 57.5%, 0%, 16.1%)
CIE-LAB	lab(45.70, 36.96, -62.37)
CIE-LCH	lch(45.70, 72.50, 300.65°)
OKLab	oklab(54.7% 0.0374 -0.1787)
OKLCH	oklch(54.7% 0.183 281.8)
XYZ	xyz(21.1305, 15.0453, 65.3959)
Luminance	0.1505 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645BD6 #CDD65B

analogous

#5B90D6 #645BD6 #A15BD6

triadic

#645BD6 #D6645B #5BD664

tetradic

#645BD6 #D65B90 #CDD65B #5BD6A1

square

#645BD6 #D65B90 #CDD65B #5BD6A1

split-complementary

#645BD6 #D6A15B #90D65B

monochromatic

#2D2592 #3B31C3 #645BD6 #928CE2 #C1BDEE

Accessibility & contrast

On white

5.24

#645BD6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.01

#645BD6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645BD6

5.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645BD6	#FFFFFF	#000000	##FFFFFF
##645BD6	1.00	5.24	4.01	5.24
#FFFFFF	5.24	1.00	21.00	1.00
#000000	4.01	21.00	1.00	21.00
##FFFFFF	5.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0070DA

Deuteranopia (green-blind)

#0068D3

Tritanopia (blue-blind)

#327890

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #645bd6;
/* rgb */ color: rgb(100, 91, 214);
/* oklch */ color: oklch(54.7% 0.183 281.8);

Tailwind

colors: {
  custom: {
    50: '#998ae3',
    500: '#645bd6',
    950: '#000000',
  },
}

SCSS

$custom: #645bd6;
$custom-light: #998ae3;
$custom-dark: #000000;

JSON

{
  "hex": "#645bd6",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 214
  },
  "hsl": {
    "h": 244.39,
    "s": 60,
    "l": 59.804
  },
  "oklch": {
    "l": 0.54697,
    "c": 0.18252,
    "h": 281.8
  },
  "luminance": 0.15047
}

Semantic roles & 50–950 ramp

primary

#645BD6

secondary

#DBDEAF

accent

#E345D8

background

#F9F8FE

surface

#F2F0FC

border

#CCCBD5

text

#0F0B16

muted

#7E7C84

Preview Lab

Preview with #645BD6

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

Preview Lab → · Contrast checker → · Palette generator →