#3638AB#3638AB

#3638AB is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.8% C 0.179 H 274.7°. Best body text is #FFFFFF at 9.09:1 contrast (WCAG AA passes).

Color values

HEX	#3638AB
RGB	rgb(54, 56, 171)
HSL	hsl(239, 52%, 44%)
HSV	hsv(239, 68%, 67%)
CMYK	cmyk(68.4%, 67.3%, 0%, 32.9%)
CIE-LAB	lab(30.76, 36.68, -61.70)
CIE-LCH	lch(30.76, 71.78, 300.73°)
OKLab	oklab(41.83% 0.0147 -0.1782)
OKLCH	oklch(41.83% 0.179 274.7)
XYZ	xyz(10.2837, 6.5520, 39.2429)
Luminance	0.0655 (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

#3638AB #ABA936

analogous

#3673AB #3638AB #6F36AB

triadic

#3638AB #AB3638 #38AB36

tetradic

#3638AB #AB3673 #ABA936 #36AB6F

square

#3638AB #AB3673 #ABA936 #36AB6F

split-complementary

#3638AB #AB6F36 #73AB36

monochromatic

#191A4E #27297C #3638AB #5557C9 #8385D8

Accessibility & contrast

On white

9.09

#3638AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#3638AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3638AB

9.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3638AB	#FFFFFF	#000000	##FFFFFF
##3638AB	1.00	9.09	2.31	9.09
#FFFFFF	9.09	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAF

Deuteranopia (green-blind)

#0043A9

Tritanopia (blue-blind)

#00566C

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3638ab;
/* rgb */ color: rgb(54, 56, 171);
/* oklch */ color: oklch(41.8% 0.179 274.7);

Tailwind

colors: {
  custom: {
    50: '#7d6fc5',
    500: '#3638ab',
    950: '#000000',
  },
}

SCSS

$custom: #3638ab;
$custom-light: #7d6fc5;
$custom-dark: #000000;

JSON

{
  "hex": "#3638ab",
  "rgb": {
    "r": 54,
    "g": 56,
    "b": 171
  },
  "hsl": {
    "h": 238.974,
    "s": 52,
    "l": 44.118
  },
  "oklch": {
    "l": 0.4183,
    "c": 0.17877,
    "h": 274.7
  },
  "luminance": 0.06553
}

Semantic roles & 50–950 ramp

primary

#3638AB

secondary

#C2C07B

accent

#D94CDB

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3638AB

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

Preview Lab → · Contrast checker → · Palette generator →