#645FCE#645FCE

#645FCE is a mid, vivid blue. Relative luminance 0.153; OKLCH L 54.8% C 0.167 H 281.4°. Best body text is #FFFFFF at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#645FCE
RGB	rgb(100, 95, 206)
HSL	hsl(243, 53%, 59%)
HSV	hsv(243, 54%, 81%)
CMYK	cmyk(51.5%, 53.9%, 0%, 19.2%)
CIE-LAB	lab(46.11, 32.07, -57.13)
CIE-LCH	lch(46.11, 65.51, 299.31°)
OKLab	oklab(54.83% 0.033 -0.1632)
OKLCH	oklch(54.83% 0.167 281.4)
XYZ	xyz(20.4849, 15.3488, 60.2638)
Luminance	0.1535 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645FCE #C9CE5F

analogous

#5F92CE #645FCE #9C5FCE

triadic

#645FCE #CE645F #5FCE64

tetradic

#645FCE #CE5F92 #C9CE5F #5FCE9C

square

#645FCE #CE5F92 #C9CE5F #5FCE9C

split-complementary

#645FCE #CE9C5F #92CE5F

monochromatic

#2E2A89 #3E38B8 #645FCE #918EDC #BFBDEB

Accessibility & contrast

On white

5.16

#645FCE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.07

#645FCE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645FCE

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645FCE	#FFFFFF	#000000	##FFFFFF
##645FCE	1.00	5.16	4.07	5.16
#FFFFFF	5.16	1.00	21.00	1.00
#000000	4.07	21.00	1.00	21.00
##FFFFFF	5.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F71D2

Deuteranopia (green-blind)

#0F69CC

Tritanopia (blue-blind)

#39788D

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #645fce;
/* rgb */ color: rgb(100, 95, 206);
/* oklch */ color: oklch(54.8% 0.167 281.4);

Tailwind

colors: {
  custom: {
    50: '#988cde',
    500: '#645fce',
    950: '#000000',
  },
}

SCSS

$custom: #645fce;
$custom-light: #988cde;
$custom-dark: #000000;

JSON

{
  "hex": "#645fce",
  "rgb": {
    "r": 100,
    "g": 95,
    "b": 206
  },
  "hsl": {
    "h": 242.703,
    "s": 53.11,
    "l": 59.02
  },
  "oklch": {
    "l": 0.54831,
    "c": 0.16651,
    "h": 281.4
  },
  "luminance": 0.1535
}

Semantic roles & 50–950 ramp

primary

#645FCE

secondary

#D8DAAF

accent

#DD4BD6

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #645FCE

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

Preview Lab → · Contrast checker → · Palette generator →