#645FA9#645FA9

#645FA9 is a mid, moderate blue. Relative luminance 0.138; OKLCH L 52.4% C 0.114 H 284.8°. Best body text is #FFFFFF at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#645FA9
RGB	rgb(100, 95, 169)
HSL	hsl(244, 30%, 52%)
HSV	hsv(244, 44%, 66%)
CMYK	cmyk(40.8%, 43.8%, 0%, 33.7%)
CIE-LAB	lab(43.88, 20.85, -39.17)
CIE-LCH	lch(43.88, 44.37, 298.02°)
OKLab	oklab(52.44% 0.0292 -0.1105)
OKLCH	oklch(52.44% 0.114 284.8)
XYZ	xyz(16.5071, 13.7577, 39.3142)
Luminance	0.1376 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645FA9 #A4A95F

analogous

#5F7FA9 #645FA9 #895FA9

triadic

#645FA9 #A9645F #5FA964

tetradic

#645FA9 #A95F7F #A4A95F #5FA989

square

#645FA9 #A95F7F #A4A95F #5FA989

split-complementary

#645FA9 #A9895F #7FA95F

monochromatic

#34325C #4B4784 #645FA9 #8B87BE #B1AFD4

Accessibility & contrast

On white

5.60

#645FA9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.75

#645FA9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645FA9

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645FA9	#FFFFFF	#000000	##FFFFFF
##645FA9	1.00	5.60	3.75	5.60
#FFFFFF	5.60	1.00	21.00	1.00
#000000	3.75	21.00	1.00	21.00
##FFFFFF	5.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#446AAC

Deuteranopia (green-blind)

#4265A7

Tritanopia (blue-blind)

#506E7C

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #645fa9;
/* rgb */ color: rgb(100, 95, 169);
/* oklch */ color: oklch(52.4% 0.114 284.8);

Tailwind

colors: {
  custom: {
    50: '#938cc3',
    500: '#645fa9',
    950: '#000000',
  },
}

SCSS

$custom: #645fa9;
$custom-light: #938cc3;
$custom-dark: #000000;

JSON

{
  "hex": "#645fa9",
  "rgb": {
    "r": 100,
    "g": 95,
    "b": 169
  },
  "hsl": {
    "h": 244.054,
    "s": 30.081,
    "l": 51.765
  },
  "oklch": {
    "l": 0.5244,
    "c": 0.11431,
    "h": 284.8
  },
  "luminance": 0.13758
}

Semantic roles & 50–950 ramp

primary

#645FA9

secondary

#C0C2A2

accent

#C661C0

background

#F9F8FC

surface

#F2F0F8

border

#CCCBD1

text

#0D0C12

muted

#7E7D81

Preview Lab

Preview with #645FA9

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

Preview Lab → · Contrast checker → · Palette generator →