#3640FF#3640FF

#3640FF is a mid, highly saturated blue. Relative luminance 0.117; OKLCH L 51.4% C 0.272 H 269.8°. Best body text is #FFFFFF at 6.30:1 contrast (WCAG AA passes).

Color values

HEX	#3640FF
RGB	rgb(54, 64, 255)
HSL	hsl(237, 100%, 61%)
HSV	hsv(237, 79%, 100%)
CMYK	cmyk(78.8%, 74.9%, 0%, 0%)
CIE-LAB	lab(40.68, 59.84, -93.86)
CIE-LCH	lch(40.68, 111.31, 302.52°)
OKLab	oklab(51.4% -0.001 -0.2719)
OKLCH	oklch(51.4% 0.272 269.8)
XYZ	xyz(21.3986, 11.6686, 95.7128)
Luminance	0.1167 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3640FF #FFF536

analogous

#36A4FF #3640FF #9036FF

triadic

#3640FF #FF3640 #40FF36

tetradic

#3640FF #FF36A4 #FFF536 #36FF90

square

#3640FF #FF36A4 #FFF536 #36FF90

split-complementary

#3640FF #FF9036 #A4FF36

monochromatic

#0009BB #000CF8 #3640FF #737AFF #B0B4FF

Accessibility & contrast

On white

6.30

#3640FF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#3640FF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3640FF

6.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3640FF	#FFFFFF	#000000	##FFFFFF
##3640FF	1.00	6.30	3.33	6.30
#FFFFFF	6.30	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006AFF

Deuteranopia (green-blind)

#0056FC

Tritanopia (blue-blind)

#00799D

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3640ff;
/* rgb */ color: rgb(54, 64, 255);
/* oklch */ color: oklch(51.4% 0.272 269.8);

Tailwind

colors: {
  custom: {
    50: '#8f77ff',
    500: '#3640ff',
    950: '#000000',
  },
}

SCSS

$custom: #3640ff;
$custom-light: #8f77ff;
$custom-dark: #000000;

JSON

{
  "hex": "#3640ff",
  "rgb": {
    "r": 54,
    "g": 64,
    "b": 255
  },
  "hsl": {
    "h": 237.015,
    "s": 100,
    "l": 60.588
  },
  "oklch": {
    "l": 0.514,
    "c": 0.27187,
    "h": 269.8
  },
  "luminance": 0.11671
}

Semantic roles & 50–950 ramp

primary

#3640FF

secondary

#EFEBA2

accent

#DA00E6

background

#FAF7FF

surface

#F3EDFF

border

#CDC8D7

text

#0F0918

muted

#7F7B86

Preview Lab

Preview with #3640FF

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

Preview Lab → · Contrast checker → · Palette generator →