#3831B2#3831B2

#3831B2 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.5% C 0.195 H 276.1°. Best body text is #FFFFFF at 9.33:1 contrast (WCAG AA passes).

Color values

HEX	#3831B2
RGB	rgb(56, 49, 178)
HSL	hsl(243, 57%, 45%)
HSV	hsv(243, 72%, 70%)
CMYK	cmyk(68.5%, 72.5%, 0%, 30.2%)
CIE-LAB	lab(30.04, 43.46, -67.08)
CIE-LCH	lch(30.04, 79.93, 302.94°)
OKLab	oklab(41.54% 0.0208 -0.1938)
OKLCH	oklch(41.54% 0.195 276.1)
XYZ	xyz(10.7624, 6.2508, 42.7502)
Luminance	0.0625 (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

#3831B2 #ABB231

analogous

#316BB2 #3831B2 #7931B2

triadic

#3831B2 #B23831 #31B238

tetradic

#3831B2 #B2316B #ABB231 #31B279

square

#3831B2 #B2316B #ABB231 #31B279

split-complementary

#3831B2 #B27931 #6BB231

monochromatic

#1A1752 #292482 #3831B2 #5851CF #8681DC

Accessibility & contrast

On white

9.33

#3831B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#3831B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3831B2

9.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3831B2	#FFFFFF	#000000	##FFFFFF
##3831B2	1.00	9.33	2.25	9.33
#FFFFFF	9.33	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CB6

Deuteranopia (green-blind)

#0041B0

Tritanopia (blue-blind)

#00556E

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #3831b2;
/* rgb */ color: rgb(56, 49, 178);
/* oklch */ color: oklch(41.5% 0.195 276.1);

Tailwind

colors: {
  custom: {
    50: '#806bca',
    500: '#3831b2',
    950: '#000000',
  },
}

SCSS

$custom: #3831b2;
$custom-light: #806bca;
$custom-dark: #000000;

JSON

{
  "hex": "#3831b2",
  "rgb": {
    "r": 56,
    "g": 49,
    "b": 178
  },
  "hsl": {
    "h": 243.256,
    "s": 56.828,
    "l": 44.51
  },
  "oklch": {
    "l": 0.41544,
    "c": 0.19493,
    "h": 276.1
  },
  "luminance": 0.06252
}

Semantic roles & 50–950 ramp

primary

#3831B2

secondary

#C1C579

accent

#E048D8

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #3831B2

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

Preview Lab → · Contrast checker → · Palette generator →