#645CF0#645CF0

#645CF0 is a mid, highly saturated blue. Relative luminance 0.167; OKLCH L 56.9% C 0.215 H 279.5°. Best body text is #FFFFFF at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#645CF0
RGB	rgb(100, 92, 240)
HSL	hsl(243, 83%, 65%)
HSV	hsv(243, 62%, 94%)
CMYK	cmyk(58.3%, 61.7%, 0%, 5.9%)
CIE-LAB	lab(47.82, 44.44, -73.63)
CIE-LCH	lch(47.82, 86.01, 301.11°)
OKLab	oklab(56.86% 0.0354 -0.2118)
OKLCH	oklch(56.86% 0.215 279.5)
XYZ	xyz(24.8059, 16.6531, 84.3284)
Luminance	0.1666 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CF0 #E8F05C

analogous

#5C9EF0 #645CF0 #AE5CF0

triadic

#645CF0 #F0645C #5CF064

tetradic

#645CF0 #F05C9E #E8F05C #5CF0AE

square

#645CF0 #F05C9E #E8F05C #5CF0AE

split-complementary

#645CF0 #F0AE5C #9EF05C

monochromatic

#1B12C0 #2F24EB #645CF0 #9994F5 #CFCCFA

Accessibility & contrast

On white

4.85

#645CF0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.33

#645CF0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CF0

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CF0	#FFFFFF	#000000	##FFFFFF
##645CF0	1.00	4.85	4.33	4.85
#FFFFFF	4.85	1.00	21.00	1.00
#000000	4.33	21.00	1.00	21.00
##FFFFFF	4.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0077F5

Deuteranopia (green-blind)

#006CED

Tritanopia (blue-blind)

#00819D

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #645cf0;
/* rgb */ color: rgb(100, 92, 240);
/* oklch */ color: oklch(56.9% 0.215 279.5);

Tailwind

colors: {
  custom: {
    50: '#9d8bf6',
    500: '#645cf0',
    950: '#000000',
  },
}

SCSS

$custom: #645cf0;
$custom-light: #9d8bf6;
$custom-dark: #000000;

JSON

{
  "hex": "#645cf0",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 240
  },
  "hsl": {
    "h": 243.243,
    "s": 83.146,
    "l": 65.098
  },
  "oklch": {
    "l": 0.56855,
    "c": 0.21471,
    "h": 279.5
  },
  "luminance": 0.16655
}

Semantic roles & 50–950 ramp

primary

#645CF0

secondary

#EAEDBB

accent

#E006D4

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C17

muted

#7F7D85

Preview Lab

Preview with #645CF0

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

Preview Lab → · Contrast checker → · Palette generator →