#3639AA#3639AA

#3639AA is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.9% C 0.176 H 274.6°. Best body text is #FFFFFF at 9.04:1 contrast (WCAG AA passes).

Color values

HEX	#3639AA
RGB	rgb(54, 57, 170)
HSL	hsl(238, 52%, 44%)
HSV	hsv(238, 68%, 67%)
CMYK	cmyk(68.2%, 66.5%, 0%, 33.3%)
CIE-LAB	lab(30.91, 35.71, -60.87)
CIE-LCH	lch(30.91, 70.57, 300.40°)
OKLab	oklab(41.91% 0.0141 -0.1757)
OKLCH	oklch(41.91% 0.176 274.6)
XYZ	xyz(10.2377, 6.6119, 38.7591)
Luminance	0.0661 (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

#3639AA #AAA736

analogous

#3673AA #3639AA #6D36AA

triadic

#3639AA #AA3639 #39AA36

tetradic

#3639AA #AA3673 #AAA736 #36AA6D

square

#3639AA #AA3673 #AAA736 #36AA6D

split-complementary

#3639AA #AA6D36 #73AA36

monochromatic

#181A4D #27297C #3639AA #5457C9 #8385D8

Accessibility & contrast

On white

9.04

#3639AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#3639AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3639AA

9.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3639AA	#FFFFFF	#000000	##FFFFFF
##3639AA	1.00	9.04	2.32	9.04
#FFFFFF	9.04	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAE

Deuteranopia (green-blind)

#0043A8

Tritanopia (blue-blind)

#00576C

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3639aa;
/* rgb */ color: rgb(54, 57, 170);
/* oklch */ color: oklch(41.9% 0.176 274.6);

Tailwind

colors: {
  custom: {
    50: '#7c70c4',
    500: '#3639aa',
    950: '#000000',
  },
}

SCSS

$custom: #3639aa;
$custom-light: #7c70c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3639aa",
  "rgb": {
    "r": 54,
    "g": 57,
    "b": 170
  },
  "hsl": {
    "h": 238.448,
    "s": 51.786,
    "l": 43.922
  },
  "oklch": {
    "l": 0.41906,
    "c": 0.17629,
    "h": 274.6
  },
  "luminance": 0.06613
}

Semantic roles & 50–950 ramp

primary

#3639AA

secondary

#C1BF7B

accent

#D84DDB

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3639AA

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

Preview Lab → · Contrast checker → · Palette generator →