#3821B2#3821B2

#3821B2 is a dark, highly saturated blue. Relative luminance 0.051; OKLCH L 39.5% C 0.210 H 278.0°. Best body text is #FFFFFF at 10.35:1 contrast (WCAG AA passes).

Color values

HEX	#3821B2
RGB	rgb(56, 33, 178)
HSL	hsl(250, 69%, 41%)
HSV	hsv(250, 81%, 70%)
CMYK	cmyk(68.5%, 81.5%, 0%, 30.2%)
CIE-LAB	lab(27.14, 51.74, -71.87)
CIE-LCH	lch(27.14, 88.55, 305.75°)
OKLab	oklab(39.51% 0.0292 -0.2076)
OKLCH	oklch(39.51% 0.21 278)
XYZ	xyz(10.2080, 5.1419, 42.5654)
Luminance	0.0514 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3821B2 #9BB221

analogous

#2153B2 #3821B2 #8121B2

triadic

#3821B2 #B23821 #21B238

tetradic

#3821B2 #B22153 #9BB221 #21B281

square

#3821B2 #B22153 #9BB221 #21B281

split-complementary

#3821B2 #B28121 #53B221

monochromatic

#180E4B #28177E #3821B2 #5036DA #7D6AE3

Accessibility & contrast

On white

10.35

#3821B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#3821B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3821B2

10.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3821B2	#FFFFFF	#000000	##FFFFFF
##3821B2	1.00	10.35	2.03	10.35
#FFFFFF	10.35	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046B6

Deuteranopia (green-blind)

#003AB0

Tritanopia (blue-blind)

#004E6B

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #3821b2;
/* rgb */ color: rgb(56, 33, 178);
/* oklch */ color: oklch(39.5% 0.210 278.0);

Tailwind

colors: {
  custom: {
    50: '#8161ca',
    500: '#3821b2',
    950: '#000000',
  },
}

SCSS

$custom: #3821b2;
$custom-light: #8161ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3821b2",
  "rgb": {
    "r": 56,
    "g": 33,
    "b": 178
  },
  "hsl": {
    "h": 249.517,
    "s": 68.72,
    "l": 41.373
  },
  "oklch": {
    "l": 0.39506,
    "c": 0.20965,
    "h": 278
  },
  "luminance": 0.05143
}

Semantic roles & 50–950 ramp

primary

#3821B2

secondary

#B9C966

accent

#EC3CD0

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0513

muted

#7D7A82

Preview Lab

Preview with #3821B2

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

Preview Lab → · Contrast checker → · Palette generator →