#3633B4#3633B4

#3633B4 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.9% C 0.196 H 274.9°. Best body text is #FFFFFF at 9.17:1 contrast (WCAG AA passes).

Color values

HEX	#3633B4
RGB	rgb(54, 51, 180)
HSL	hsl(241, 56%, 45%)
HSV	hsv(241, 72%, 71%)
CMYK	cmyk(70%, 71.7%, 0%, 29.4%)
CIE-LAB	lab(30.51, 42.74, -67.49)
CIE-LCH	lch(30.51, 79.89, 302.35°)
OKLab	oklab(41.91% 0.0167 -0.1951)
OKLCH	oklch(41.91% 0.196 274.9)
XYZ	xyz(10.9406, 6.4462, 43.8388)
Luminance	0.0645 (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

#3633B4 #B1B433

analogous

#3371B4 #3633B4 #7633B4

triadic

#3633B4 #B43633 #33B436

tetradic

#3633B4 #B43371 #B1B433 #33B476

square

#3633B4 #B43371 #B1B433 #33B476

split-complementary

#3633B4 #B47633 #71B433

monochromatic

#191855 #282584 #3633B4 #5855CF #8785DC

Accessibility & contrast

On white

9.17

#3633B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#3633B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3633B4

9.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3633B4	#FFFFFF	#000000	##FFFFFF
##3633B4	1.00	9.17	2.29	9.17
#FFFFFF	9.17	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EB8

Deuteranopia (green-blind)

#0042B2

Tritanopia (blue-blind)

#005770

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3633b4;
/* rgb */ color: rgb(54, 51, 180);
/* oklch */ color: oklch(41.9% 0.196 274.9);

Tailwind

colors: {
  custom: {
    50: '#7f6ccc',
    500: '#3633b4',
    950: '#000000',
  },
}

SCSS

$custom: #3633b4;
$custom-light: #7f6ccc;
$custom-dark: #000000;

JSON

{
  "hex": "#3633b4",
  "rgb": {
    "r": 54,
    "g": 51,
    "b": 180
  },
  "hsl": {
    "h": 241.395,
    "s": 55.844,
    "l": 45.294
  },
  "oklch": {
    "l": 0.41906,
    "c": 0.19581,
    "h": 274.9
  },
  "luminance": 0.06447
}

Semantic roles & 50–950 ramp

primary

#3633B4

secondary

#C4C67D

accent

#DF49DC

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #3633B4

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

Preview Lab → · Contrast checker → · Palette generator →