#645CA6#645CA6

#645CA6 is a mid, moderate blue. Relative luminance 0.131; OKLCH L 51.7% C 0.115 H 286.6°. Best body text is #FFFFFF at 5.80:1 contrast (WCAG AA passes).

Color values

HEX	#645CA6
RGB	rgb(100, 92, 166)
HSL	hsl(246, 29%, 51%)
HSV	hsv(246, 45%, 65%)
CMYK	cmyk(39.8%, 44.6%, 0%, 34.9%)
CIE-LAB	lab(42.94, 21.83, -38.90)
CIE-LCH	lch(42.94, 44.60, 299.30°)
OKLab	oklab(51.67% 0.0328 -0.1097)
OKLCH	oklch(51.67% 0.115 286.6)
XYZ	xyz(15.9637, 13.1163, 37.7596)
Luminance	0.1312 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CA6 #9EA65C

analogous

#5C79A6 #645CA6 #895CA6

triadic

#645CA6 #A6645C #5CA664

tetradic

#645CA6 #A65C79 #9EA65C #5CA689

square

#645CA6 #A65C79 #9EA65C #5CA689

split-complementary

#645CA6 #A6895C #79A65C

monochromatic

#343058 #4C467F #645CA6 #8A84BC #AFABD1

Accessibility & contrast

On white

5.80

#645CA6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.62

#645CA6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CA6

5.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CA6	#FFFFFF	#000000	##FFFFFF
##645CA6	1.00	5.80	3.62	5.80
#FFFFFF	5.80	1.00	21.00	1.00
#000000	3.62	21.00	1.00	21.00
##FFFFFF	5.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4267A9

Deuteranopia (green-blind)

#4063A4

Tritanopia (blue-blind)

#526B79

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #645ca6;
/* rgb */ color: rgb(100, 92, 166);
/* oklch */ color: oklch(51.7% 0.115 286.6);

Tailwind

colors: {
  custom: {
    50: '#938ac1',
    500: '#645ca6',
    950: '#000000',
  },
}

SCSS

$custom: #645ca6;
$custom-light: #938ac1;
$custom-dark: #000000;

JSON

{
  "hex": "#645ca6",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 166
  },
  "hsl": {
    "h": 246.486,
    "s": 29.365,
    "l": 50.588
  },
  "oklch": {
    "l": 0.5167,
    "c": 0.11451,
    "h": 286.6
  },
  "luminance": 0.13117
}

Semantic roles & 50–950 ramp

primary

#645CA6

secondary

#BCBF9E

accent

#C662BB

background

#F9F8FB

surface

#F2F0F7

border

#CCCBD0

text

#0D0B12

muted

#7E7C81

Preview Lab

Preview with #645CA6

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

Preview Lab → · Contrast checker → · Palette generator →