#3831B3#3831B3

#3831B3 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.6% C 0.196 H 276.0°. Best body text is #FFFFFF at 9.30:1 contrast (WCAG AA passes).

Color values

HEX	#3831B3
RGB	rgb(56, 49, 179)
HSL	hsl(243, 57%, 45%)
HSV	hsv(243, 73%, 70%)
CMYK	cmyk(68.7%, 72.6%, 0%, 29.8%)
CIE-LAB	lab(30.14, 43.79, -67.51)
CIE-LCH	lch(30.14, 80.47, 302.97°)
OKLab	oklab(41.64% 0.0206 -0.1951)
OKLCH	oklch(41.64% 0.196 276)
XYZ	xyz(10.8632, 6.2911, 43.2809)
Luminance	0.0629 (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

#3831B3 #ACB331

analogous

#316BB3 #3831B3 #7931B3

triadic

#3831B3 #B33831 #31B338

tetradic

#3831B3 #B3316B #ACB331 #31B379

square

#3831B3 #B3316B #ACB331 #31B379

split-complementary

#3831B3 #B37931 #6BB331

monochromatic

#1A1753 #292483 #3831B3 #5852D0 #8782DD

Accessibility & contrast

On white

9.30

#3831B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#3831B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3831B3

9.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3831B3	#FFFFFF	#000000	##FFFFFF
##3831B3	1.00	9.30	2.26	9.30
#FFFFFF	9.30	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB7

Deuteranopia (green-blind)

#0041B1

Tritanopia (blue-blind)

#00566F

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #3831b3;
/* rgb */ color: rgb(56, 49, 179);
/* oklch */ color: oklch(41.6% 0.196 276.0);

Tailwind

colors: {
  custom: {
    50: '#806bcb',
    500: '#3831b3',
    950: '#000000',
  },
}

SCSS

$custom: #3831b3;
$custom-light: #806bcb;
$custom-dark: #000000;

JSON

{
  "hex": "#3831b3",
  "rgb": {
    "r": 56,
    "g": 49,
    "b": 179
  },
  "hsl": {
    "h": 243.231,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.41644,
    "c": 0.19618,
    "h": 276
  },
  "luminance": 0.06292
}

Semantic roles & 50–950 ramp

primary

#3831B3

secondary

#C2C67A

accent

#E048D8

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #3831B3

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

Preview Lab → · Contrast checker → · Palette generator →