#645C8E#645C8E

#645C8E is a mid, moderate blue. Relative luminance 0.123; OKLCH L 50.3% C 0.079 H 290.6°. Best body text is #FFFFFF at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#645C8E
RGB	rgb(100, 92, 142)
HSL	hsl(250, 21%, 46%)
HSV	hsv(250, 35%, 56%)
CMYK	cmyk(29.6%, 35.2%, 0%, 44.3%)
CIE-LAB	lab(41.71, 15.06, -26.49)
CIE-LCH	lch(41.71, 30.48, 299.62°)
OKLab	oklab(50.34% 0.0277 -0.0737)
OKLCH	oklch(50.34% 0.079 290.6)
XYZ	xyz(13.9639, 12.3164, 27.2275)
Luminance	0.1232 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645C8E #868E5C

analogous

#5C6D8E #645C8E #7D5C8E

triadic

#645C8E #8E645C #5C8E64

tetradic

#645C8E #8E5C6D #868E5C #5C8E7D

square

#645C8E #8E5C6D #868E5C #5C8E7D

split-complementary

#645C8E #8E7D5C #6D8E5C

monochromatic

#302C44 #4A4469 #645C8E #847DAB #A7A2C3

Accessibility & contrast

On white

6.06

#645C8E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#645C8E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645C8E

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645C8E	#FFFFFF	#000000	##FFFFFF
##645C8E	1.00	6.06	3.46	6.06
#FFFFFF	6.06	1.00	21.00	1.00
#000000	3.46	21.00	1.00	21.00
##FFFFFF	6.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E6390

Deuteranopia (green-blind)

#4F618D

Tritanopia (blue-blind)

#5B656E

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #645c8e;
/* rgb */ color: rgb(100, 92, 142);
/* oklch */ color: oklch(50.3% 0.079 290.6);

Tailwind

colors: {
  custom: {
    50: '#918aaf',
    500: '#645c8e',
    950: '#000000',
  },
}

SCSS

$custom: #645c8e;
$custom-light: #918aaf;
$custom-dark: #000000;

JSON

{
  "hex": "#645c8e",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 142
  },
  "hsl": {
    "h": 249.6,
    "s": 21.368,
    "l": 45.882
  },
  "oklch": {
    "l": 0.50338,
    "c": 0.07877,
    "h": 290.6
  },
  "luminance": 0.12317
}

Semantic roles & 50–950 ramp

primary

#645C8E

secondary

#ACB195

accent

#BE6AB0

background

#F9F8FA

surface

#F1F0F4

border

#CBCBCE

text

#0D0B10

muted

#7E7C7F

Preview Lab

Preview with #645C8E

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

Preview Lab → · Contrast checker → · Palette generator →