#645DBD#645DBD

#645DBD is a mid, vivid blue. Relative luminance 0.142; OKLCH L 53.3% C 0.146 H 283.6°. Best body text is #FFFFFF at 5.47:1 contrast (WCAG AA passes).

Color values

HEX	#645DBD
RGB	rgb(100, 93, 189)
HSL	hsl(244, 42%, 55%)
HSV	hsv(244, 51%, 74%)
CMYK	cmyk(47.1%, 50.8%, 0%, 25.9%)
CIE-LAB	lab(44.53, 28.07, -49.84)
CIE-LCH	lch(44.53, 57.20, 299.39°)
OKLab	oklab(53.31% 0.0342 -0.1418)
OKLCH	oklch(53.31% 0.146 283.6)
XYZ	xyz(18.3525, 14.2113, 49.9103)
Luminance	0.1421 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645DBD #B6BD5D

analogous

#5D86BD #645DBD #945DBD

triadic

#645DBD #BD645D #5DBD64

tetradic

#645DBD #BD5D86 #B6BD5D #5DBD94

square

#645DBD #BD5D86 #B6BD5D #5DBD94

split-complementary

#645DBD #BD945D #86BD5D

monochromatic

#332E71 #47409D #645DBD #8E88CF #B7B4E0

Accessibility & contrast

On white

5.47

#645DBD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.84

#645DBD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645DBD

5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645DBD	#FFFFFF	#000000	##FFFFFF
##645DBD	1.00	5.47	3.84	5.47
#FFFFFF	5.47	1.00	21.00	1.00
#000000	3.84	21.00	1.00	21.00
##FFFFFF	5.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#316CC0

Deuteranopia (green-blind)

#2C66BB

Tritanopia (blue-blind)

#467284

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #645dbd;
/* rgb */ color: rgb(100, 93, 189);
/* oklch */ color: oklch(53.3% 0.146 283.6);

Tailwind

colors: {
  custom: {
    50: '#968bd1',
    500: '#645dbd',
    950: '#000000',
  },
}

SCSS

$custom: #645dbd;
$custom-light: #968bd1;
$custom-dark: #000000;

JSON

{
  "hex": "#645dbd",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 189
  },
  "hsl": {
    "h": 244.375,
    "s": 42.105,
    "l": 55.294
  },
  "oklch": {
    "l": 0.53307,
    "c": 0.14587,
    "h": 283.6
  },
  "luminance": 0.14212
}

Semantic roles & 50–950 ramp

primary

#645DBD

secondary

#CCCFA7

accent

#D256C9

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0E0C14

muted

#7E7D82

Preview Lab

Preview with #645DBD

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

Preview Lab → · Contrast checker → · Palette generator →