#645BD9#645BD9

#645BD9 is a mid, vivid blue. Relative luminance 0.152; OKLCH L 54.9% C 0.186 H 281.5°. Best body text is #FFFFFF at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#645BD9
RGB	rgb(100, 91, 217)
HSL	hsl(244, 62%, 60%)
HSV	hsv(244, 58%, 85%)
CMYK	cmyk(53.9%, 58.1%, 0%, 14.9%)
CIE-LAB	lab(45.91, 37.89, -63.74)
CIE-LCH	lch(45.91, 74.15, 300.73°)
OKLab	oklab(54.92% 0.0373 -0.1827)
OKLCH	oklch(54.92% 0.186 281.5)
XYZ	xyz(21.5171, 15.1999, 67.4322)
Luminance	0.1520 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645BD9 #D0D95B

analogous

#5B91D9 #645BD9 #A35BD9

triadic

#645BD9 #D9645B #5BD964

tetradic

#645BD9 #D95B91 #D0D95B #5BD9A3

square

#645BD9 #D95B91 #D0D95B #5BD9A3

split-complementary

#645BD9 #D9A35B #91D95B

monochromatic

#2B2397 #392EC8 #645BD9 #938DE5 #C2BEF0

Accessibility & contrast

On white

5.20

#645BD9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.04

#645BD9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645BD9

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645BD9	#FFFFFF	#000000	##FFFFFF
##645BD9	1.00	5.20	4.04	5.20
#FFFFFF	5.20	1.00	21.00	1.00
#000000	4.04	21.00	1.00	21.00
##FFFFFF	5.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0071DD

Deuteranopia (green-blind)

#0068D6

Tritanopia (blue-blind)

#2F7991

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #645bd9;
/* rgb */ color: rgb(100, 91, 217);
/* oklch */ color: oklch(54.9% 0.186 281.5);

Tailwind

colors: {
  custom: {
    50: '#998ae6',
    500: '#645bd9',
    950: '#000000',
  },
}

SCSS

$custom: #645bd9;
$custom-light: #998ae6;
$custom-dark: #000000;

JSON

{
  "hex": "#645bd9",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 217
  },
  "hsl": {
    "h": 244.286,
    "s": 62.376,
    "l": 60.392
  },
  "oklch": {
    "l": 0.5492,
    "c": 0.18646,
    "h": 281.5
  },
  "luminance": 0.15201
}

Semantic roles & 50–950 ramp

primary

#645BD9

secondary

#DDE0B0

accent

#CA1BBE

background

#FAF8FE

surface

#F3F0FC

border

#CDCBD5

text

#0F0B16

muted

#7F7C84

Preview Lab

Preview with #645BD9

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

Preview Lab → · Contrast checker → · Palette generator →