#645ACC#645ACC

#645ACC is a mid, vivid blue. Relative luminance 0.144; OKLCH L 53.8% C 0.171 H 283.0°. Best body text is #FFFFFF at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#645ACC
RGB	rgb(100, 90, 204)
HSL	hsl(245, 53%, 58%)
HSV	hsv(245, 56%, 80%)
CMYK	cmyk(51%, 55.9%, 0%, 20%)
CIE-LAB	lab(44.77, 34.48, -58.13)
CIE-LCH	lch(44.77, 67.59, 300.68°)
OKLab	oklab(53.8% 0.0384 -0.1662)
OKLCH	oklch(53.8% 0.171 283)
XYZ	xyz(19.8075, 14.3802, 58.8470)
Luminance	0.1438 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645ACC #C2CC5A

analogous

#5A89CC #645ACC #9D5ACC

triadic

#645ACC #CC645A #5ACC64

tetradic

#645ACC #CC5A89 #C2CC5A #5ACC9D

square

#645ACC #CC5A89 #C2CC5A #5ACC9D

split-complementary

#645ACC #CC9D5A #89CC5A

monochromatic

#302983 #4237B2 #645ACC #9089DA #BCB7E9

Accessibility & contrast

On white

5.42

#645ACC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.88

#645ACC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645ACC

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645ACC	#FFFFFF	#000000	##FFFFFF
##645ACC	1.00	5.42	3.88	5.42
#FFFFFF	5.42	1.00	21.00	1.00
#000000	3.88	21.00	1.00	21.00
##FFFFFF	5.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B6ED0

Deuteranopia (green-blind)

#0066CA

Tritanopia (blue-blind)

#3B748A

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #645acc;
/* rgb */ color: rgb(100, 90, 204);
/* oklch */ color: oklch(53.8% 0.171 283.0);

Tailwind

colors: {
  custom: {
    50: '#9889dc',
    500: '#645acc',
    950: '#000000',
  },
}

SCSS

$custom: #645acc;
$custom-light: #9889dc;
$custom-dark: #000000;

JSON

{
  "hex": "#645acc",
  "rgb": {
    "r": 100,
    "g": 90,
    "b": 204
  },
  "hsl": {
    "h": 245.263,
    "s": 52.778,
    "l": 57.647
  },
  "oklch": {
    "l": 0.53796,
    "c": 0.17056,
    "h": 283
  },
  "luminance": 0.14381
}

Semantic roles & 50–950 ramp

primary

#645ACC

secondary

#D4D8AA

accent

#DC4CD0

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #645ACC

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

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