#645BDA#645BDA

#645BDA is a mid, vivid blue. Relative luminance 0.153; OKLCH L 55.0% C 0.188 H 281.5°. Best body text is #FFFFFF at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#645BDA
RGB	rgb(100, 91, 218)
HSL	hsl(244, 63%, 61%)
HSV	hsv(244, 58%, 85%)
CMYK	cmyk(54.1%, 58.3%, 0%, 14.5%)
CIE-LAB	lab(45.98, 38.20, -64.20)
CIE-LCH	lch(45.98, 74.70, 300.76°)
OKLab	oklab(54.99% 0.0373 -0.184)
OKLCH	oklch(54.99% 0.188 281.5)
XYZ	xyz(21.6476, 15.2521, 68.1193)
Luminance	0.1525 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645BDA #D1DA5B

analogous

#5B91DA #645BDA #A35BDA

triadic

#645BDA #DA645B #5BDA64

tetradic

#645BDA #DA5B91 #D1DA5B #5BDAA3

square

#645BDA #DA5B91 #D1DA5B #5BDAA3

split-complementary

#645BDA #DAA35B #91DA5B

monochromatic

#2B2298 #392ECA #645BDA #938DE5 #C2BFF1

Accessibility & contrast

On white

5.18

#645BDA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.05

#645BDA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645BDA

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645BDA	#FFFFFF	#000000	##FFFFFF
##645BDA	1.00	5.18	4.05	5.18
#FFFFFF	5.18	1.00	21.00	1.00
#000000	4.05	21.00	1.00	21.00
##FFFFFF	5.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0071DE

Deuteranopia (green-blind)

#0068D7

Tritanopia (blue-blind)

#2D7992

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #645bda;
/* rgb */ color: rgb(100, 91, 218);
/* oklch */ color: oklch(55.0% 0.188 281.5);

Tailwind

colors: {
  custom: {
    50: '#9a8ae6',
    500: '#645bda',
    950: '#000000',
  },
}

SCSS

$custom: #645bda;
$custom-light: #9a8ae6;
$custom-dark: #000000;

JSON

{
  "hex": "#645bda",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 218
  },
  "hsl": {
    "h": 244.252,
    "s": 63.184,
    "l": 60.588
  },
  "oklch": {
    "l": 0.54994,
    "c": 0.18777,
    "h": 281.5
  },
  "luminance": 0.15253
}

Semantic roles & 50–950 ramp

primary

#645BDA

secondary

#DDE1B0

accent

#CB1BBE

background

#FAF8FE

surface

#F3F0FC

border

#CDCBD5

text

#0F0B16

muted

#7F7C84

Preview Lab

Preview with #645BDA

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

Preview Lab → · Contrast checker → · Palette generator →