#645B93#645B93

#645B93 is a mid, moderate blue. Relative luminance 0.123; OKLCH L 50.4% C 0.088 H 290.2°. Best body text is #FFFFFF at 6.07:1 contrast (WCAG AA passes).

Color values

HEX	#645B93
RGB	rgb(100, 91, 147)
HSL	hsl(250, 24%, 47%)
HSV	hsv(250, 38%, 58%)
CMYK	cmyk(32%, 38.1%, 0%, 42.4%)
CIE-LAB	lab(41.69, 17.05, -29.55)
CIE-LCH	lch(41.69, 34.11, 299.99°)
OKLab	oklab(50.39% 0.0304 -0.0825)
OKLCH	oklch(50.39% 0.088 290.2)
XYZ	xyz(14.2617, 12.2978, 29.2204)
Luminance	0.1230 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645B93 #8A935B

analogous

#5B6E93 #645B93 #805B93

triadic

#645B93 #93645B #5B9364

tetradic

#645B93 #935B6E #8A935B #5B9380

square

#645B93 #935B6E #8A935B #5B9380

split-complementary

#645B93 #93805B #6E935B

monochromatic

#312C47 #4A446D #645B93 #857DAE #A8A3C6

Accessibility & contrast

On white

6.07

#645B93 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#645B93 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645B93

6.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645B93	#FFFFFF	#000000	##FFFFFF
##645B93	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)

#4B6395

Deuteranopia (green-blind)

#4B6192

Tritanopia (blue-blind)

#596570

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #645b93;
/* rgb */ color: rgb(100, 91, 147);
/* oklch */ color: oklch(50.4% 0.088 290.2);

Tailwind

colors: {
  custom: {
    50: '#9289b3',
    500: '#645b93',
    950: '#000000',
  },
}

SCSS

$custom: #645b93;
$custom-light: #9289b3;
$custom-dark: #000000;

JSON

{
  "hex": "#645b93",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 147
  },
  "hsl": {
    "h": 249.643,
    "s": 23.529,
    "l": 46.667
  },
  "oklch": {
    "l": 0.50394,
    "c": 0.08796,
    "h": 290.2
  },
  "luminance": 0.12298
}

Semantic roles & 50–950 ramp

primary

#645B93

secondary

#AFB496

accent

#C068B2

background

#F9F8FB

surface

#F1F0F6

border

#CBCBD0

text

#0D0B11

muted

#7E7C80

Preview Lab

Preview with #645B93

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

Preview Lab → · Contrast checker → · Palette generator →