#3640C5#3640C5

#3640C5 is a mid, highly saturated blue. Relative luminance 0.085; OKLCH L 45.6% C 0.203 H 271.9°. Best body text is #FFFFFF at 7.79:1 contrast (WCAG AA passes).

Color values

HEX	#3640C5
RGB	rgb(54, 64, 197)
HSL	hsl(236, 57%, 49%)
HSV	hsv(236, 73%, 77%)
CMYK	cmyk(72.6%, 67.5%, 0%, 22.7%)
CIE-LAB	lab(34.97, 40.74, -70.19)
CIE-LCH	lch(34.97, 81.16, 300.14°)
OKLab	oklab(45.6% 0.0068 -0.203)
OKLCH	oklch(45.6% 0.203 271.9)
XYZ	xyz(13.4294, 8.4809, 53.7417)
Luminance	0.0848 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3640C5 #C5BB36

analogous

#3688C5 #3640C5 #7436C5

triadic

#3640C5 #C53640 #40C536

tetradic

#3640C5 #C53688 #C5BB36 #36C574

square

#3640C5 #C53688 #C5BB36 #36C574

split-complementary

#3640C5 #C57436 #88C536

monochromatic

#1C2165 #293095 #3640C5 #646CD4 #9499E2

Accessibility & contrast

On white

7.79

#3640C5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#3640C5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3640C5

7.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3640C5	#FFFFFF	#000000	##FFFFFF
##3640C5	1.00	7.79	2.70	7.79
#FFFFFF	7.79	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059C9

Deuteranopia (green-blind)

#004BC3

Tritanopia (blue-blind)

#00647D

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3640c5;
/* rgb */ color: rgb(54, 64, 197);
/* oklch */ color: oklch(45.6% 0.203 271.9);

Tailwind

colors: {
  custom: {
    50: '#8275d8',
    500: '#3640c5',
    950: '#000000',
  },
}

SCSS

$custom: #3640c5;
$custom-light: #8275d8;
$custom-dark: #000000;

JSON

{
  "hex": "#3640c5",
  "rgb": {
    "r": 54,
    "g": 64,
    "b": 197
  },
  "hsl": {
    "h": 235.804,
    "s": 56.972,
    "l": 49.216
  },
  "oklch": {
    "l": 0.45603,
    "c": 0.20308,
    "h": 271.9
  },
  "luminance": 0.08482
}

Semantic roles & 50–950 ramp

primary

#3640C5

secondary

#CDC88A

accent

#D648E0

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #3640C5

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

Preview Lab → · Contrast checker → · Palette generator →