#645C8D#645C8D

#645C8D is a mid, moderate blue. Relative luminance 0.123; OKLCH L 50.3% C 0.077 H 290.8°. Best body text is #FFFFFF at 6.07:1 contrast (WCAG AA passes).

Color values

HEX	#645C8D
RGB	rgb(100, 92, 141)
HSL	hsl(250, 21%, 46%)
HSV	hsv(250, 35%, 55%)
CMYK	cmyk(29.1%, 34.8%, 0%, 44.7%)
CIE-LAB	lab(41.67, 14.79, -25.96)
CIE-LCH	lch(41.67, 29.88, 299.67°)
OKLab	oklab(50.29% 0.0275 -0.0722)
OKLCH	oklch(50.29% 0.077 290.8)
XYZ	xyz(13.8892, 12.2865, 26.8339)
Luminance	0.1229 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645C8D #858D5C

analogous

#5C6C8D #645C8D #7C5C8D

triadic

#645C8D #8D645C #5C8D64

tetradic

#645C8D #8D5C6C #858D5C #5C8D7C

square

#645C8D #8D5C6C #858D5C #5C8D7C

split-complementary

#645C8D #8D7C5C #6C8D5C

monochromatic

#2F2C43 #4A4468 #645C8D #847CAA #A7A1C2

Accessibility & contrast

On white

6.07

#645C8D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#645C8D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645C8D

6.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645C8D	#FFFFFF	#000000	##FFFFFF
##645C8D	1.00	6.07	3.46	6.07
#FFFFFF	6.07	1.00	21.00	1.00
#000000	3.46	21.00	1.00	21.00
##FFFFFF	6.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F638F

Deuteranopia (green-blind)

#4F618C

Tritanopia (blue-blind)

#5B656E

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #645c8d;
/* rgb */ color: rgb(100, 92, 141);
/* oklch */ color: oklch(50.3% 0.077 290.8);

Tailwind

colors: {
  custom: {
    50: '#918aae',
    500: '#645c8d',
    950: '#000000',
  },
}

SCSS

$custom: #645c8d;
$custom-light: #918aae;
$custom-dark: #000000;

JSON

{
  "hex": "#645c8d",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 141
  },
  "hsl": {
    "h": 249.796,
    "s": 21.03,
    "l": 45.686
  },
  "oklch": {
    "l": 0.50286,
    "c": 0.07724,
    "h": 290.8
  },
  "luminance": 0.12287
}

Semantic roles & 50–950 ramp

primary

#645C8D

secondary

#ACB095

accent

#BE6AB0

background

#F9F8FA

surface

#F1F0F4

border

#CBCBCE

text

#0D0B10

muted

#7E7C7F

Preview Lab

Preview with #645C8D

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

Preview Lab → · Contrast checker → · Palette generator →