#3639AC#3639AC

#3639AC is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.1% C 0.179 H 274.4°. Best body text is #FFFFFF at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#3639AC
RGB	rgb(54, 57, 172)
HSL	hsl(238, 52%, 44%)
HSV	hsv(238, 69%, 67%)
CMYK	cmyk(68.6%, 66.9%, 0%, 32.5%)
CIE-LAB	lab(31.09, 36.41, -61.77)
CIE-LCH	lch(31.09, 71.70, 300.51°)
OKLab	oklab(42.09% 0.0139 -0.1784)
OKLCH	oklch(42.09% 0.179 274.4)
XYZ	xyz(10.4284, 6.6881, 39.7631)
Luminance	0.0669 (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

#3639AC #ACA936

analogous

#3674AC #3639AC #6E36AC

triadic

#3639AC #AC3639 #39AC36

tetradic

#3639AC #AC3674 #ACA936 #36AC6E

square

#3639AC #AC3674 #ACA936 #36AC6E

split-complementary

#3639AC #AC6E36 #74AC36

monochromatic

#191A4F #272A7D #3639AC #5558CA #8486D8

Accessibility & contrast

On white

8.98

#3639AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#3639AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3639AC

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3639AC	#FFFFFF	#000000	##FFFFFF
##3639AC	1.00	8.98	2.34	8.98
#FFFFFF	8.98	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB0

Deuteranopia (green-blind)

#0044AA

Tritanopia (blue-blind)

#00576D

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3639ac;
/* rgb */ color: rgb(54, 57, 172);
/* oklch */ color: oklch(42.1% 0.179 274.4);

Tailwind

colors: {
  custom: {
    50: '#7d70c6',
    500: '#3639ac',
    950: '#000000',
  },
}

SCSS

$custom: #3639ac;
$custom-light: #7d70c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3639ac",
  "rgb": {
    "r": 54,
    "g": 57,
    "b": 172
  },
  "hsl": {
    "h": 238.475,
    "s": 52.212,
    "l": 44.314
  },
  "oklch": {
    "l": 0.42091,
    "c": 0.17891,
    "h": 274.4
  },
  "luminance": 0.06689
}

Semantic roles & 50–950 ramp

primary

#3639AC

secondary

#C2C07C

accent

#D84CDC

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3639AC

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

Preview Lab → · Contrast checker → · Palette generator →